Multiple Choice:

1) Find the variance for the given sample data. Round your answer to one more decimal place than the original data.

7 7 2 5 1

Hint: The long way to find this is: https://socratic.org/questions/how-do-i-calculate-the-variance-and-standard-deviation-of-102-104-106-108-110(Links to an external site.)

Hint: The shortcut way to find this is: https://www.socscistatistics.com/descriptive/variance/default.aspx

A) 7.7

B) 7.8

C) 6.2

D) 11.8

Group of answer choices

7.7

7.8

6.2

11.8

Flag question: Question 2

If the standard deviation for a set of data is 0, which of the following must be true?

1. A) All of the data values are identical.
2. B) All of the data values are negative.
3. C) All the data values equal 0.
4. D) None of the above must be true since standard deviation cannot be equal to 0.

Group of answer choices

All of the data values are identical

All of the data values are negative

All the data values equal 0

None of the above must be true since standard deviation cannot be equal to 0

Flag question: Question 3

Human body temperatures have a mean of 98.20 F and a standard deviation of 0.62 F. Sally's temperature can be described byz= -1.5. What is her temperature? Round your answer to the nearest hundredth.

Hint: The formula for this is: X = (Z times St.Dev) + Mean

That is X= (-1.5 x .62) + 98.2

A) 97.27 F

B) 96.70 F

C) 99.13 F

D) 95.79 F

Group of answer choices

97.27 F

96.70 F

99.13 F

95.79 F

Flag question: Question 4

Listed below are the amounts of time (in months) that the employees of a restaurant have been working at the restaurant. Find the mean for the given sample data. Round your answer to one more decimal place than the original data values.

1 5 6 8 11 14 17 46 61 90 99 126 143 167

A) 31.5 months

B) 52.9 months

C) 56.7 months

D) 61.1 months

Group of answer choices

31.5 months

52.9 months

56.7 months

61.1 months

Flag question: Question 5

The prices (in dollars) of 12 electric smooth top ranges are listed below. Find the range for the given sample data. See page 98 for range definition.

865 1010 655 565 1465 1110

710 765 820 1310 555 1065

A) $930

B) $900

C)$910

D) $920

Group of answer choices

$930

$900

$910

$920

Flag question: Question 6

Find the standard deviation for the given sample data. Round your answer to one more decimal place than is present in the original data. The online calculator ishttps://www.socscistatistics.com/descriptive/variance/default.aspxLinks to an external site.

22.6 16.1 36.1 36.0 23.8 20.3

A) 4347.7

B) 8.35

C) 3999.0

D) 36.1

Group of answer choices

4347.7

8.35

3999.0

36.1

Flag question: Question 7

Flip a coin twice. Create the sample space of possible outcomes.

A) {HH, HT, TT}

B) {HH, TT, HT, HT}

C) {HT, TH}

D) {HH, HT, TH, TT}

Group of answer choices

{HH, HT, TT}

{HH, TT, HT, HT}

{HT, TH}

{HH, HT, TH, TT}

In a certain class of students, there are 11 boys from Wilmette, 7 girls from Wilmette, 5 boys from Winnetka, 4 girls from Winnetka, 4 boys from Glencoe, and 4 girls from Glencoe. If the teacher calls upon a student to answer a question, what is the probability that the student will be a boy? Hint: There are how many boys? There are how many total students?

A) 0.314

B) 0.429

C) 0.571

D) 0.71

Group of answer choices

0.314

0.429

0.571

0.71

Flag question: Question 9

Evaluate the expression 8P4. You can use this calculator: https://www.calculator.net/permutation-and-combination-calculator.html?cnv=8&crv=4&x=73&y=15

A) 1680

B) 2

C) 4

D) 70

Group of answer choices

1680

2

4

70

Flag question: Question 10

Evaluate the expression: 11!/7!

Long way: https://www.chilimath.com/lessons/intermediate-algebra/dividing-factorials/Links to an external site.

Short cut: https://www.thecalculator.co/math/Factorial-Calculator-514.htmlLinks to an external site.

Group of answer choices

A) 11/7

B) 7920

C) 2!

D) 77,000

11/7

7920

2!

77,000