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Perguntas do quiz (40)
1160. The table below shows the distribution of a random variable X. Find M[x] and D(X).
- AM[X]= 0,2; D(X) =0.8
- BM[X]= 0,3; D(X) =0.27
- CM[X]= 0,2; D(X) =0.76
- DM[X]= 0,2; D(X) =0.21
- EM[X]= 0,8; D(X) =0.24
2161. The table below shows the distribution of a random variable X. What is the D(X)?
- A2,01
- B1,67
- C4,71
- D0,7
- E4,7
3162. The table below shows the distribution of a random variable X. What is the M(X)?
- A0,7
- B0,5
- C4
- D0,34
- E4,7
4163. The table below shows the distribution of a random variable X. What is the D(X)?
- A0,7
- B0,5
- C4
- D0,34
- E4,7
5164. The table below shows the distribution of a random variable X. What is the M(X)?
- A0,7
- B0,5
- C4
- D0,34
- E4,7
6165. The table below shows the distribution of a random variable X. What is the M(X)?
- A0,7
- B0,5
- C4
- D0,34
- E4,7
7166. The cumulative distribution function of a discrete random variable X is given by
- A0,4
- B0,3
- C0,6
- D0,9
- E0,5
8167. The cumulative distribution function of a discrete random variable X is given by
- A0,4
- B0,3
- C0,6
- D0,9
- E0,5
9168. The cumulative distribution function of a discrete random variable X is given by
- A0,4
- B0,3
- C0,9
- D0,6
- E0,5
10169. The cumulative distribution function of a discrete random variable X is given by
- A0,3
- B0,4
- C0,9
- D0,5
- E0,6
11170. The cumulative distribution function of a discrete random variable X is given by
- A0,3
- B0,4
- C0,9
- D0,6
- E0,5
12171. You are interested in knowing what percent of all households in a large city have a single woman as the head of the household. To estimate this percentage, you conduct a survey with 200 households and determine how many of these 200 are headed by a single woman.
- Aall households in the city
- Bthe 200 households selected
- Cthe percent of households headed by single women in the city
- Dthe percent of households headed by single women among the 200 selected households
13172. You are interested in knowing what percent of all households in a large city have a single woman as the head of the household. To estimate this percentage, you conduct a survey with 200 households and determine how many of these 200 are headed by a single woman.In this example, what is the sample?
- Athe 200 households selected
- Bthe percent of households headed by single women in the city
- Cthe percent of households headed by single women among the 200 selected households
- Dall households in the city
14173. You are interested in knowing what percent of all households in a large city have a single woman as the head of the household. To estimate this percentage, you conduct a survey with 200 households and determine how many of these 200 are headed by a single woman.In this example, what is the parameter?
- Athe 200 households selected
- Bthe percent of households headed by single women in the city
- Cthe percent of households headed by single women among the 200 selected households
- Dall households in the city
15174. You are interested in knowing what percent of all households in a large city have a single woman as the head of the household. To estimate this percentage, you conduct a survey with 200 households and determine how many of these 200 are headed by a single woman. In this example, what is the statistic?
- Athe 200 households selected
- Bthe percent of households headed by single women in the city
- Cthe percent of households headed by single women among the 200 selected households
- Dall households in the city
16175. Which of the following is an example of a quantitative variable (also known as a numerical variable)?
- Athe color of an automobile
- Ba person’s state of residence
- Ca person’s zip code
- Da person’s height, recorded in inches
17176. The Lakers scored the following numbers of goals in their last twenty matches: 3, 0, 1, 5, 4, 3, 2, 6, 4, 2, 3, 3, 0, 7, 1, 1, 2, 3, 4, 3. Which number had the highest frequency?
- A3
- B4
- C6
- D7
18177. Which letter occurs the most frequently in the following sentence? THE SUN ALWAYS SETS IN THE WEST.
- AE
- BS
- CT
- DW
19178. Pi is a special number that is used to find the area of a circle. The following number gives the first 100 digits of the number pi: 3.141 592 653 589 793 238 462 643 383 279 502 884 197 169 399 375 105 820 974 944 592 307 816 406 286 208 998 628 034 825 342 117 067. Which of the digits 0 to 9 occurs most frequently in this number?
- A3
- B2
- C8
- D9
20179. A fair die was thrown 100 times. The frequency distribution is shown in the following table:
- A11
- B34
- C45
- D56
21180. 60 students sat a test. The frequency distribution is shown in the following table:
How many students scored 5 or more?
- A11
- B22
- C33
- D38
22181. A fair die was thrown 100 times. The frequency distribution is shown in the following table:
How many throws scored greater than 2, but less than or equal to 5?
- A26
- B44
- C45
- D63
23182. 60 students sat a test. The frequency distribution is shown in the following table:
How many students scored greater than or equal to 4, but less than or equal to 7?
- A19
- B26
- C27
- D34
24183. Ramiro did a survey of the number of pets owned by his classmates, with the following results:
How many of his classmates had less than 3 pets?
- A16
- B20
- C24
- D26
25184. The histogram shows the heights of 21 students in a class, grouped into 5-inch groups. How many students were greater than or equal to 60 inches tall?
- A21
- B17
- C11
- D6
26185. The histogram shows the heights of 21 students in a class, grouped into 5-inch groups. How many students were greater than or equal to 60 inches tall but less than 70 inches tall?
- A13
- B15
- C16
- D17
27186. A class carried out an experiment to measure the lengths of cuckoo eggs. The length of each egg was measured to the nearest mm. The results are shown in the following histogram: How many eggs were measured altogether in the experiment
- A25
- B40
- C90
- D100
28187. A class carried out an experiment to measure the lengths of cuckoo eggs. The length of each egg was measured to the nearest mm. The results are shown in the following histogram: How many eggs were less than 23 mm in length?
- A26
- B40
- C66
- D92
29188. The histogram shows the birth weights of 100 new born babies. The histogram shows the birth weights of 100 new born babies. How many babies weighted 8lb or more?
- A22
- B23
- C30
- D45
30189. The histogram shows the birth weights of 100 new born babies. Babies who weigh less than 5 lb are considered to have a low birth weight. Babies who weigh 10lb or more are considered to have a high birth weight. What percent of the babies had neither a low or a high birth weight?
- A97
- B91
- C85
- D83
31190. Jim measured the temperature at 2 p.m. at the same spot in his garden and recorded his results to the nearest degree (°F) for each day in the year. The results are shown in the following histogram: on approximately how many days was the 2 p.m temperature above 70°F?
- AApproximately 12
- BApproximately 39
- CApproximately 54
- DApproximately 93
32191. Jim measured the temperature at 2 p.m. at the same spot in his garden and recorded his results to the nearest degree (°F) for each day in the year. The results are shown in the following histogram: on approximately how many days was the 2 p.m temperature above 40°F but less than 70°F?
- Aapproximately 50%
- Bapproximately 60%
- Capproximately 70%
- Dapproximately 80%
33192. Jim measured the daily rainfall in mm at the same spot in his garden for each day in the year (365 days). He recorded his results to the nearest millimeter. The results are shown in the following histogram: on approximately how many days was the rainfall less than 10 mm?
- Aapproximately 81
- Bapproximately 135
- Capproximately 149
- Dapproximately 216
34193. Jim measured the daily rainfall in mm at the same spot in his garden for each day in the year (365 days). He recorded his results to the nearest millimeter. The results are shown in the following histogram: on approximately what percent of the days was the rainfall more than 15 mm?
- AApproximately 10%
- BApproximately 20%
- CApproximately 40%
- DApproximately 30%
35194. What is the range for the above stem and leaf plot?
- A39
- B40
- C56
- D45
36195. For the above stem and leaf plot, what is the median value?
- A28
- B32
- C35,5
- D39
37196. What is the range for the above stem and leaf plot?
- A98
- B97
- C86
- D85
38197. What is the mode for the above stem and leaf plot?
- A25
- B54
- C60
- D66
39198. What is the mean for the above stem and leaf plot?
- A50,56
- B50,96
- C53,13
- D54,56
40199. What is the mode for the above stem and leaf plot?
- A11
- B33
- C34,5
- D45
Informações
- Descrição
- A Engineering Graphics and Design Quiz sobre Router rip| Version 5, criado por Alibi Nassipkali em 27-12-2019.
- Autor
- Alibi Nassipkali
- Idioma
- English
- Visualizações
- 30
- Etiquetas
- Avaliação
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