efwef

Calculate the standard score of the given x value, x=74.5x=74.5, where μ=83μ=83, σ=5.6σ=5.6. Round your answer to two decimal places.

-1.52

Calculate the standard score of the given x value, x=83x=83, where μ=80.4μ=80.4, σ=5σ=5. Round your answer to two decimal places.

0.52

5,12,12,4,9,11,7,4 Calculate the value of the sample variance. Round your answer to one decimal place.

12.0

Calculate the GPA of a student with the following grades: A (1717 hours), B (1717 hours), F (1010 hours). Note that an A is equivalent to 4.04.0, a B is equivalent to a 3.03.0, a C is equivalent to a 2.02.0, a D is equivalent to a 1.01.0, and an F is equivalent to a 00. Round your answer to two decimal places.

2.70

Calculate the GPA of a student with the following grades: A (1818 hours), B (2121 hours), D (1212 hours). Note that an A is equivalent to 4.04.0, a B is equivalent to a 3.03.0, a C is equivalent to a 2.02.0, a D is equivalent to a 1.01.0, and an F is equivalent to a 00. Round your answer to two decimal places.

2.88

5,12,12,4,9,11,7,4 range

8

Find the mean, median, and mode of the following data. If necessary, round to one more decimal place than the largest number of decimal places given in the data. Rate of Fatal Alcohol Impaired Car Crashes per 100100 Million Vehicle Miles of Travel0.760.760.600.600.770.770.290.290.300.300.770.770.410.410.450.450.560.560.450.450.620.620.710.710.400.400.290.290.590.59 Copy Data

Mean =0.531=0.531, Median =0.56=0.56, Mode =0.77,0.29,0.45

Calculate the sample standard deviation for the following data set. If necessary, round to one more decimal place than the largest number of decimal places given in the data. Body Temperatures (in ºF) of Adult Females96.996.999.999.996.696.698.998.999.699.6100.2100.298.498.4100.3100.398.598.599.999.998.398.3100.2100.2100.5100.598.398.399.899.897.797.798.998.9100.4100.498.598.597.197.1

1.23

5,12,12,4,9,11,7,4 Calculate the value of the sample standard deviation. Round your answer to one decimal place.

3.5

Suppose that prices of recently sold homes in one neighborhood have a mean of $220,000$⁢220,000 with a standard deviation of $7450$⁢7450. Using Chebyshev's Theorem, what is the minimum percentage of recently sold homes with prices between $197,650$⁢197,650 and $242,350$⁢242,350? Round your answer to one decimal place.

88.9%

Suppose that wait times for customers at a fast food restaurant have a mean of 2.72.7 minutes with a standard deviation of 0.20.2 minutes. Using Chebyshev's Theorem, what is the minimum percentage of customers who wait between 2.12.1 minutes and 3.33.3 minutes? Round your answer to one decimal place.

88.9%

Suppose that IQ scores have a bell-shaped distribution with a mean of 105105 and a standard deviation of 1616. Using the empirical rule, what percentage of IQ scores are between 73 and 137?

95%

Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.622.62 and a standard deviation of 0.390.39. Using the empirical rule, what percentage of the students have grade point averages that are between 1.841.84 and 3.43.4?

95%

A: $28,200$⁢28,200, $34,300$⁢34,300, $32,300$⁢32,300, $20,800$⁢20,800, $36,900$⁢36,900, $20,600$⁢20,600, $20,000$⁢20,000, $29,600$⁢29,600, $35,400$⁢35,400, $20,200$⁢20,200, $20,200$⁢20,200, $38,100$⁢38,100, $31,300$⁢31,300, $38,600$⁢38,600 B: 4.774.77, 3.463.46, 4.624.62, 3.303.30, 3.133.13, 3.013.01, 4.694.69, 3.553.55, 3.573.57, 4.594.59, 3.653.65 For each of the above sets of sample data, calculate the coefficient of variation, CV. Round to one decimal place.

CV for Data Set A: 25.2% CV for Data Set B: 17.6%

Find the mean, median, and mode of the following data. If necessary, round to one more decimal place than the largest number of decimal places given in the data. Rate of Fatal Alcohol Impaired Car Crashes per 100100 Million Vehicle Miles of Travel0.790.790.510.510.490.490.590.590.440.440.350.350.640.640.800.800.560.560.460.460.580.580.320.320.500.500.480.480.520.52 Copy Data

Mean =0.535=0.535, Median =0.51=0.51, Mode == No mode

Calculate the range, population variance, and population standard deviation for the following data set. If necessary, round to one more decimal place than the largest number of decimal places given in the data. 14,11,6,16,7,11,16,5,13,15

Range: 11, Population variance: 15.4, Population standard deviation: 3.9

Calculate the sample standard deviation and sample variance for the following frequency distribution of heart rates for a sample of American adults. If necessary, round to one more decimal place than the largest number of decimal places given in the data. Heart Rates in Beats per MinuteClassFrequency56 - 6256 - 62151563 - 6963 - 696670 - 7670 - 769977 - 8377 - 83101084 - 9084 - 901515 Copy Data

Sample standard deviation: 11.111.1, Sample variance: 123.2

Calculate the sample standard deviation and sample variance for the following frequency distribution of heart rates for a sample of American adults. If necessary, round to one more decimal place than the largest number of decimal places given in the data. Heart Rates in Beats per MinuteClassFrequency61 - 6661 - 66121267 - 7267 - 72121273 - 7873 - 78101079 - 8479 - 843385 - 9085 - 901313 Copy Data

Sample standard deviation: 9.29.2, Sample variance: 84.6

A: $28,200$⁢28,200, $34,300$⁢34,300, $32,300$⁢32,300, $20,800$⁢20,800, $36,900$⁢36,900, $20,600$⁢20,600, $20,000$⁢20,000, $29,600$⁢29,600, $35,400$⁢35,400, $20,200$⁢20,200, $20,200$⁢20,200, $38,100$⁢38,100, $31,300$⁢31,300, $38,600$⁢38,600 B: 4.774.77, 3.463.46, 4.624.62, 3.303.30, 3.133.13, 3.013.01, 4.694.69, 3.553.55, 3.573.57, 4.594.59, 3.653.65 Which of the above sets of sample data has the smaller spread?

set b