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Chapter 10/11 Connect Homework instructions | help

The amount of water consumed each day by a healthy adult follows a normal distribution with a mean of1.22 liters. A sample of 10 adults after the campaign shows the following consumption in liters:

1.44 1.80 1.20 1.32 1.44 1.32 1.90 1.64 1.32 1.60

At the .05 significance level, can we conclude that water consumption has increased? Calculate andinterpret the p-value.

(a)State the null hypothesis and the alternate hypothesis. (Round your answers to 2 decimal places.)

H0: μ ≤ n/r

H1: μ > n/r

(b) State the decision rule for .05 significance level. (Round your answer to 3 decimal places.)

Reject H0 if t > n/r

(c) Compute the value of the test statistic. (Round the value of standard deviation and final answer to3 decimal places.)

Value of the test statistic n/r

(d) At the .05 level, can we conclude that water consumption has increased?

n/r H0. and conclude that water consumption has n/r .

(e) Estimate the p-value.

p-value n/r

rev: 04_17_2012

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Worksheet Difficulty: MediumLearning Objective: 10-07 Compute andinterpret a p-value.

The amount of water consumed each day by a healthy adult follows a normal distribution with a mean of1.22 liters. A sample of 10 adults after the campaign shows the following consumption in liters:

1.44 1.80 1.20 1.32 1.44 1.32 1.90 1.64 1.32 1.60

At the .05 significance level, can we conclude that water consumption has increased? Calculate andinterpret the p-value.

(a)State the null hypothesis and the alternate hypothesis. (Round your answers to 2 decimal places.)

H0: μ ≤ 1.22

H1: μ > 1.22

(b) State the decision rule for .05 significance level. (Round your answer to 3 decimal places.)

Reject H0 if t > 1.833

Hai Dang TrinhQM2241 Lind15e: QM2241 Sp14

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(c) Compute the value of the test statistic. (Round the value of standard deviation and final answer to3 decimal places.)

Value of the test statistic3.839 ± 0.001

(d) At the .05 level, can we conclude that water consumption has increased?

Reject H0. and conclude that water consumption has increased.

(e) Estimate the p-value.

p-value between 0.005 and 0.0005

rev: 04_17_2012

Explanation:

(c):

(d):Reject Ho and conclude that the drug has increased the amount of urine.

(e):The p-value is between .005 and .0005.

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