# A+ Answers of the following Questions

**Thehonest**

Question 1

For the histogram that could be created relative to the table in #10, find the 23rd percentile.

a.-12

b.-8

c.-5

d.-8.5

Question 2

For the histogram that could be created relative to the table in #10, which of the following intervals is the most crowded?

a.-12-13

b.-8-9

c.-9-12

d.-13-16

Question 3

For the given list, find the outlier(s): 6, 58, 100, 56, 52, 49, 58, 65, 58, 59

a.-6

b.-6, 100

c.-100

d.-59

e.-there are none

Question 1

Find the average for: 8, 9, 14, -5, -26, 18,

a.-12

b.-2

c.-14

d.-3

e.-3.5

Question 2

For the given set of numbers, find the Standard deviation: 57.9, 78, 96, 0, -14, 15, 3.

a.-39.88

b.-43.07

c.-12.8

d.-24.8

e.-33.7

Question 3

For the given list, find the median: 188, 98, 41, 0, 68, 143, 193, 169.

a.-120.5

b.-115

c.-34

d.-4.5

e.-112.5

Question 1

Bias in measurement theory is called ____________.

a.-systematic error

b.-sampling error

c.-chance error

Question 2

Find the area under the Normal Curve from -2.5 to 1.1.

a.-82.85%

b.-12.95%

c.-25.89%

d.-98.76%

e.-72.87%

Question 3

For the women age 18-24 in the HANES2 sample, the average height was about 65.2 inches, and the SD was about 1.9 inches. Estimate the percentage of women with heights above 65 inches.

a.-53.99%

b.-92.03%

c.-68.27%

d.-46.02%

e.-7.97%

Question 1

The average of a data set is 5 and the SD of the same data set is 1. If I multiply each data point by 3 and then subtract 2 from each data point, what will the new average and SD be?

a.-avg=17

SD=17

b.-avg=15

SD=13

c.-avg=13

SD=3

d.-Avg=13

SD=3

e.-avg=3

SD=-1

Question 2

Sixteen people in a room have an average height of 5'6". A seventeenth person enters the room. How tall would he have to be to raise the average height by one inch?

a.-6'1"

b.-5'8"

c.-6'5"

d.-6'2"

e.-6"11"

Question 3

A card is picked at random from a shuffled deck. What is the probability that it is either red or a king?

a.-19/52

b.-18/52

c.-17/52

d.-28/52

e.-30/52

Question 1

The heights of the men age 18 and over in the HANES sample averaged 68.5 inches; the SD was 2.9 inches. Use the normal curve to estimate the percentage of these men with heights between 65 and 68 inches.

a.-none of these

b.-76.99%

c.-32.54%

d.-11.92%

e.-44.46%

Question 2

The average on an exam was 23.5 and the SD was 5.5. Use the normal curve to estimate the percentage of students who made between 18 and 29.

a.-20%

b.-68.27%

c.-55%

d.-95.43%

e.-16.64%

Question 3

A car dealer has 5 red cars and 3 blue cars. The purchasing department of a company will buy two cars from this dealership. If the purchasing department selects the two cars at random, what is the chance that both cars are red?

a. 25/64

b. 1/14

c. none of these

d. 5/14

e. 5/8

- 10 years ago

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- solutions.docx