You are conducting a study to see if the average male life expectancy is significantly different from 88. Your sample data (n=9) produce the test statistic t=−2.75. Find the p-value accurate to 4 decimal places.

What does the standard deviation tell you about a set of data?

If a person’s z-score equalas 2.08, what is their percentile? Thank you.

The distribution of weights of 9-ounce bags of a particular brand of potato chips is approximately normal. The mean is 9.11 ounces and the standard deviation is 0.15 ounces. Use the Empirical Rule (68-95-99.7 Rule) to answer the questions below. The percentage of bags weighing between 8.96 and 9.26 ounces is The percentage of bags weighing between 8.81 and 9.11 ounces is The percentage of bags weighing less than 9.41 ounces is The percentage of bags weighing more than 9.41 ounces is %. Question Help: Read 1 DVideo 1 Video 2 Submit Question MacBookA

Suppose that the weight of male babies less than 2 months old is normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds. What proportion of babies weigh less than 9.20 pounds?Write only a number as your answer. Round to 4 decimal places (for example 0.0048). Do not write as a percentage.

z = 3 is what percentile?

Find the proportion of Normally distributed observations with a zz-score above -1.94. Give your answer to four decimal places.

Suppose you are told your BMI is 32, the  70th percentile for your age and sex. Please interpret this percentile age: 28 Female

Use the sample statistics to test the claim that the mean score on a final exam is more than 78. x¯=81x¯=81 s=10s=10 n=41

You are a consumer psychologist interested in holiday spending. A national census reports that the American family spent an average of µ = $81 for Halloween candy and costumes last year. A sample of N = 16 families this year produced a mean of $85 with s = 20. t-value ? t-critical?