A survey of 65 beer drinkers ages 21-29 had a mean of 22.7 servings of beer...

A survey of 65 beer drinkers ages 21-29 had a mean of 22.7 servings of beer during the last month, with a standard deviation of 8.49 servings. A survey of 107 beer drinkers ages 30-39 had a mean of 19.8 servings of beer during the last month, with a standard deviation of 6.21 servings. At the 0.05 level of significance, test the claim that the mean monthly beer consumption of beer drinkers ages 21-29 is greater than the mean monthly beer consumption of beer drinkers ages 30-39.

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orchestra answered 1 year ago

21. In a survey of women in a certain country (ages 20−29), the mean height was...

21. In a survey of women in a certain country (ages 20−29), the mean height was 65.8 inches with a standard deviation of 2.87 inches. Answer the following questions about the specified normal distribution. (a) The height that represents the 95th percentile is ___. (b) What height represents the first quartile? 22. The weights of bags of baby carrots are normally distributed, with a mean of 34 ounces and a standard deviation of 0.31 ounce. Bags in the upper 4.5%...

in a survey of men in a certain country ages (20-29) the mean height was 64.6...

in a survey of men in a certain country ages (20-29) the mean height was 64.6 inches with a standard deviation of 2.8 inches. 1. the height that represents the 99th percentile is ?? inches (round to two decimals places as needed) 2. the height that represents the first quartile is ?? inches (round to two decimal places as needed)

In a survey of women in a certain country (ages 20minus29), the mean height was 65.6...

In a survey of women in a certain country (ages 20minus29), the mean height was 65.6 inches with a standard deviation of 2.85 inches. Answer the following questions about the specified normal distribution. (a) What height represents the 95th percentile? (b) What height represents the first quartile?

In a survey of women in a certain country (ages 20-29), the mean height was 65.1...

In a survey of women in a certain country (ages 20-29), the mean height was 65.1 inches with a standard deviation of 2.84 inches. Answer the following questions about the specified normal distribution. (a) What height represents the 95th percentile? (b) What height represents the first quartile?

In a survey of women in a certain country (ages 20minus29), the mean height was 64.9...

In a survey of women in a certain country (ages 20minus29), the mean height was 64.9 inches with a standard deviation of 2.81 inches. Answer the following questions about the specified normal distribution. (a) What height represents the 95th percentile? (b) What height represents the first quartile? (a) The height that represents the 95th percentile is nothing inches. (Round to two decimal places as needed.) (b) The height that represents the first quartile is nothing inches. (Round to two decimal...

The height of women (ages 20 to 29) are approximaltely normally distributed with a mean of...

The height of women (ages 20 to 29) are approximaltely normally distributed with a mean of 68 inches and standard deviation of 3.8 inches. The heights of men (ages 20 to 29) are approximately normally distributed with a mean height of 71.5 inches and a standard deviation of 3.4 inches. A) Use the z- score to compare a woman that is 5 feet 7 inches and a man that is 5 feet 7 inches tall. B) If a z-score of...

The heights of American women 18 to 29 are normally distributed with a mean of 65...

The heights of American women 18 to 29 are normally distributed with a mean of 65 inches and a standard deviation of 3.5 inches. An American woman in this age bracket is chosen at random. What is the probability that she is more than 68 inches stall? What is the probability that she is less than 64 inches tall? What is the probability that she is between 63 and 67 inches tall? What is the probability that an American woman's...

The mean height of men in the US (ages 20-29) is 69.5 inches and the standard...

The mean height of men in the US (ages 20-29) is 69.5 inches and the standard deviation is 3.0 inches. A random sample of 49 men between ages 20-29 is drawn from this population. Find the probability that the sample height x is more than 70.5 inches.

The mean height of women in the United States (ages 20-29) is 64.2 inches with a...

The mean height of women in the United States (ages 20-29) is 64.2 inches with a standard deviation of 2.9 inches. A random sample of 60 women in this age group is selected. Assume that the distribution of these heights is normally distributed. Are you more likely to randomly select 1 woman with a height more than 70 inches or are you more likely to select a random sample of 20 women with a mean height more than 70 inches?...

The height of women ages 20-29 are normally distributed, with a mean of 64.3 inches. Assume...

The height of women ages 20-29 are normally distributed, with a mean of 64.3 inches. Assume sigmaequals2.5 inches. Are you more likely to randomly select 1 woman with a height less than 66.2 inches or are you more likely to select a sample of 18 women with a mean height less than 66.2 inches? Explain. What is the probability of randomly selecting 1 woman with a height of less than 66.2 inches? _______(Round to four decimal places as needed.) What...

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