QUESTION 1 Use the empirical rule to solve the problem. At a college, GPA is normally distributed with a mean of 2.9 and a standard deviation of 0.6. What percentage of college students have a GPA between 2.3 and 3.5? to-68% b-95% c- 84.13% d-99.7%

QUESTION 2 Find the indicated measure. The weights (in pounds) of 30 newborn babies are listed below. Find the first quartile (Q1). 5.5, 5.7, 5.8, 6.0, 6.1, 6.1, 6.3, 6.4, 6.5, 6.6, 6.7, 6.7, 6.7, 6.9, 7.0, 7.0, 7.0, 7.1, 7.2, 7.2, 7.4, 7.5, 7.7, 7.7, 7.8, 8.0, 8.1, 8.1, 8.3, 8.7 a- 7.5 lbs. b- 6.3 lbs. c- 5.8 lbs. d- 6.4 lbs.

QUESTION 3

The histogram below represents the number of televisions per household for a sample of US households. How many households are included in the histogram?

to-100

b-110

c-90

d-95

QUESTION 4

Resolve the problem. The mean of a data set is -3.82 and its standard deviation is 2.31. Find z -score for the value 3.99

a-3.04

b-3.72

c-3.68

d-3.38

QUESTION 6 Find the variance of the given data. Round your answer to one decimal more than the original data. The weights (in ounces) of 10 cookies are: 1.47, 0.56, 0.58, 0.86, 1.21, 1, 1.46, 1.44, 0.88, 0.53 a- 3.5g^2 b- 4g^2 c- 0.13 oz^2 d- 0.108 oz^2

QUESTION 7 Identify which of these types of sampling is used: random, stratified, systematic, cluster, convenience. 49, 34, and 48 students are selected from the Sophomore, Junior, and Senior classes with 496, 348, and 481 students, respectively. a- systematic b- Random c- Convenience d- Stratified

QUESTION 8

Find the percentile of the value 128 for the following data set. Data set: 122, 134, 126, 120, 128, 130, 120, 118, 125, 122, 126, 136, 118, 122, 124, 119

to-75

b-82

c-67

d-70

QUESTION 9 Find the median of the given sample data. The distances (in miles) traveled in the last week by each of the representatives of a sales company are listed below. 107, 114, 214, 230, 436, 445 Find the median distance traveled. a- 222 mi b - 220.50 mi c - 230 mi d - 214 mi

QUESTION 10 Perform the requested conversions. Convert the fraction 7/11 to an equivalent decimal and percent. a-0.756, 75.6% b-0.636, 63.6% c-0.636, 6.36% d-0.756, 756%

QUESTION 11 The speeds (in miles per hour) of cars passing through a given checkpoint are measured by radar. The results are shown below. Find the middle range. 44.3, 41.4, 42.4, 40.7, 43.1, 40.3, 44.5, 41.4, 44.3, 42.1 43.4 41.4 40.7 43, 4 41.4 at- 4.20 mph b - 42.30 mph c- 42.1 mph d - 42.40 mph

QUESTION 12 Find the range of the given sample. The manager of an electrical supply store measured the diameters of coils of wire in inventory. The diameters of the rolls (in meters) are listed below. 0.177, 0.115, 0.542, 0.413, 0.618, 0.315 a- 0.503 m b- 0.138 m c-0.115m d-0.542 m

QUESTION 13 Find the mean of the given data. Unless otherwise indicated, round to the nearest decimal place from the original data. Local Tupperware distributors earned these commissions last month: $1,077.28, $2,661.13, $4,642.11, $4,264.15, $1,019.55, $3,444.20, $2,525.92, $3,740.26, $3,533.07, $1,633.84 What is the average commission earned? Round your answer to the nearest hundredth. a- $3171.28 b-$2848.15 c-$3567.69 d- $2854.15

QUESTION 15 Determine which of the four levels of measurement (nominal, ordinal, interval, and ratio) is most appropriate. Nationalities of the respondents. a- Nominal b - Ordinal c-Interval d- Reason