# Confidence interval for mean weight loss

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1. Test the null hypothesis that the population mean weight loss is zero versus the alternative hypothesis that the mean weight loss is greater than zero. use .05 and assume the population of weight loss is normally distributed. Also compute the p value.

2. What values of the sample mean weight loss would make you reject the null hypothesis?

3. Construct a 95% confidence interval for the population mean weight loss.

Please show step by step how you worked this out.

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Step by step method for computing test confidence interval for mean weight loss.

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Confidence intervals null hypothesis

1. Test the null hypothesis that the population mean weight loss is zero versus the alternative hypothesis that the mean weight loss is greater than zero. Use .05 and assume the population of weight loss is normally distributed. Also compute the p value.

H0 : There is no significant weight loss.

H1 : There is significant weight loss.

Test Statistic: t= where and S are the mean and SD of difference in the weight.

Rejection criteria: Reject the null hypothesis, if the ...

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