Local Pizza Delivery; Delivery mean amount time = 45 minutes; New system - test for changes...

H0: μ = 45 minutes vs. Ha: μ ≠ 45 minutes

The average yearly rate of return on the stocks an investor recommends is at least 10%.

To test of the recommendation : H0: μ ≥ 10.0% Ha: μ < 10.0%

Cell Phone Battery charge should last at least 24 hrs; Engineer suspects it's actually less...

H0 : μ⩾ 24 hours; H1: μ < 24 hours

2,000 calories maximum per day. Your trainer challenges you...

H0: μ ≤ 2,000 calories vs. Ha: μ > 2,000 calories

Exercise walking; minimum of 10,000 steps at day. Your friend challenges you.

H0: μ ⩾ 10,000 steps vs. Ha: μ < 10,000 steps

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WEB - Modern Business Statistics - Chapter 09 – Hypothesis Testing 01

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Essentials of Modern Business Statistics with Microsoft® Excel® , 8th Edition Chapter 09 – Hypothesis Testing Jerry Roek https://www.linkedin.com/in/jerryroek

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Questions 10

Answers

1
Local Pizza Delivery; Delivery mean amount time = 45 minutes; New system - test for changes...
H0: μ ≤ 45 minutes vs. Ha: μ > 45 minutes
H0: μ ⩾ 45 minutes vs. Ha: μ < 45 minutes
None of these answers
H0: μ = 45 minutes vs. Ha: μ ≠ 45 minutes
2
A customer uses a credit card at the store and the card is denied. Plenty of funds available; this is known as a...
Type I Error
Type II Error
3
Which of the following is the symbol for the mean ?
μ
σ
π
α
4
The average yearly rate of return on the stocks an investor recommends is at least 10%.
To test of the recommendation : H0: μ > 10.0% Ha: μ ≤ 10.0%
To test of the recommendation : H0: μ < 10.0% Ha: μ ≥ 10.0%
To test of the recommendation : H0: μ ≤ 10.0% Ha: μ > 10.0%
To test of the recommendation : H0: μ ≥ 10.0% Ha: μ < 10.0%
5
A student believes the average grade on the final exam is at least 85. The correct hypotheses
H0: μ ≤ 85 Ha: μ > 85
H0: μ < 85 Ha: μ ≥ 85
H0: μ ≥ 85 Ha: μ < 85
H0: μ > 85 Ha: μ ≤ 85
6
Cell Phone Battery charge should last at least 24 hrs; Engineer suspects it's actually less...
None of these answers
H0 : μ Not Equal 24 hours; H1: μ Equals 24 hours
H0 : μ = 24 hours; H1: μ > 24 hours
H0 : μ⩾ 24 hours; H1: μ < 24 hours
7
2,000 calories maximum per day. Your trainer challenges you...
H0: μ ≤ 2,000 calories vs. Ha: μ > 2,000 calories
H0: μ ⩾ 2,000 calories vs. Ha: μ < 2,000 calories
H0: μ = 2,000 calories vs. Ha: μ ≠ 2,000 calories
None of these answers
8
Exercise walking; minimum of 10,000 steps at day. Your friend challenges you.
H0: μ ⩾ 10,000 steps vs. Ha: μ < 10,000 steps
H0: μ = 10,000 steps vs. Ha: μ ≠ 10,000 steps
H0: μ ≤ 10,000 steps vs. Ha: μ > 10,000 steps
None of these answers
9
A test-prep company advertises training program raises SAT scores by at least 30 points...
H0: μ ≤ 30 vs. Ha: μ > 30
None of these answers
H0: μ = 30 vs. Ha: μ ≠ 30
H0: μ ≥ 30 vs. Ha: μ < 30
10
Which of the following hypotheses is not a valid null hypothesis?
H0: μ = 0
H0: μ ≤ 0
H0: μ < 0
H0: μ ≥ 0

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