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Statistics Review 3 (Topics 8 - 10)

Authored by Jennifer Droemer

Mathematics

University

CCSS covered

Used 7+ times

Statistics Review 3 (Topics 8 - 10)
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21 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The manager of a fast-food restaurant wants to reduce the proportion of drive-through customers who have to wait for more than 2 minutes to receive their food once their order is placed.  Based on store records, 43% of all customers wait more than 2 minutes to receive their food. To try and reduce customer wait time, the manager hires an additional employee to assist with drive-through orders.  After a month, the manager takes a random sample of 60 drive-through customers and finds that 23 of them have to wait more than 2 minutes to receive their food.

Parameter of Interest: The true population ________of drive-through customers who have to wait more than 2 minutes to receive their food.

mean

proportion

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The manager of a fast-food restaurant wants to reduce the proportion of drive-through customers who have to wait for more than 2 minutes to receive their food once their order is placed. Based on store records, 43% of all customers wait more than 2 minutes to receive their food. To try and reduce customer wait time, the manager hires an additional employee to assist with drive-through orders. After a month, the manager takes a random sample of 60 drive-through customers and finds that 23 of them have to wait more than 2 minutes to receive their food.

p = probability of waiting more than 2 min. = _______

0.43

0.57

60

23

Tags

CCSS.HSS.IC.B.4

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The manager of a fast-food restaurant wants to reduce the proportion of drive-through customers who have to wait for more than 2 minutes to receive their food once their order is placed. Based on store records, 43% of all customers wait more than 2 minutes to receive their food. To try and reduce customer wait time, the manager hires an additional employee to assist with drive-through orders. After a month, the manager takes a random sample of 60 drive-through customers and finds that 23 of them have to wait more than 2 minutes to receive their food.

q = probability of waiting less than 2 min. = _______

0.43

0.57

60

23

Tags

CCSS.HSS.IC.B.4

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The manager of a fast-food restaurant wants to reduce the proportion of drive-through customers who have to wait for more than 2 minutes to receive their food once their order is placed. Based on store records, 43% of all customers wait more than 2 minutes to receive their food. To try and reduce customer wait time, the manager hires an additional employee to assist with drive-through orders. After a month, the manager takes a random sample of 60 drive-through customers and finds that 23 of them have to wait more than 2 minutes to receive their food.

n = sample size = _______

0.43

0.57

60

23

Tags

CCSS.6.SP.A.2

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The manager of a fast-food restaurant wants to reduce the proportion of drive-through customers who have to wait for more than 2 minutes to receive their food once their order is placed. Based on store records, 43% of all customers wait more than 2 minutes to receive their food. To try and reduce customer wait time, the manager hires an additional employee to assist with drive-through orders. After a month, the manager takes a random sample of 60 drive-through customers and finds that 23 of them have to wait more than 2 minutes to receive their food.

p^ = sample proportion = _______

0.43

0.57

60

23

Tags

CCSS.HSS.IC.B.4

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

7.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Fail to reject the Null Hypothesis when the Alternative Hypothesis is true.

Deciding that wait times have NOT been significantly reduced, when they actually have.

Reject the Null Hypothesis when the Null Hypothesis is true.

Deciding that drive-through wait times have been significantly reduced but they have not.

Consequence: The restaurant continues to pay for an additional drive-through employee that they do not need.

Consequence: The restaurant gets rid of the extra drive-through employee, so wait-times increase again.

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