NARRBEGIN: Science Quiz Scores
Science Quiz Scores
Consider the hypotheses H₀: $\sigma$ ² = 20 vs. H₁: $\sigma$ ² > 20. Assume that Science scores on a 25-point quiz for a random sample of 5 students were drawn from a normal population. These were: 18, 16, 10, 13, and 23.NARREND
-The sales manager of a large multinational corporation is concerned that some salespersons perform very well and others quite poorly. To help analyze the problem he draws a random sample of 20 salespersons, determines their commission incomes (in thousands of dollars), and calculates the following statistics: $\bar { x }$ = $37.2, and s = $7.8. Do these statistics provide sufficient evidence at the 5% significance level to conclude that the population variance exceeds $35 million²?

Question

NARRBEGIN: Science Quiz Scores
Science Quiz Scores
Consider the hypotheses H₀:

\sigma

² = 20 vs. H₁:

\sigma

² > 20. Assume that Science scores on a 25-point quiz for a random sample of 5 students were drawn from a normal population. These were: 18, 16, 10, 13, and 23.NARREND
-The sales manager of a large multinational corporation is concerned that some salespersons perform very well and others quite poorly. To help analyze the problem he draws a random sample of 20 salespersons, determines their commission incomes (in thousands of dollars), and calculates the following statistics:

\bar { x }

= $37.2, and s = $7.8. Do these statistics provide sufficient evidence at the 5% significance level to conclude that the population variance exceeds $35 million²?

Quizplus · Accepted Answer

The Answer of NARRBEGIN: Science Quiz Scores Science Quiz Scores Consider the hypotheses H 0 : $\sigma$ 2 = 20 vs. H 1 : $\sigma$ 2 > 20. Assume that Science scores on a 25-point quiz for a random sample of 5 students were drawn from a normal population. These were: 18, 16, 10, 13, and 23.NARREND -The sales manager of a large multinational corporation is concerned that some salespersons perform very well and others quite poorly. To help analyze the problem he draws a random sample of 20 salespersons, determines their commission incomes (in thousands of dollars), and calculates the following statistics: $\bar { x }$ = $37.2, and s = $7.8. Do these statistics provide sufficient evidence at the 5% significance level to conclude that the population variance exceeds $35 million²?

NARRBEGIN: Science Quiz Scores Science Quiz Scores Consider the Hypotheses σ\sigmaσ

NARRBEGIN: Science Quiz Scores
Science Quiz Scores
Consider the Hypotheses $\sigma$