Question

1. A study claimed that there was a height difference between African elephants and Asian elephants....

1. A study claimed that there was a height difference between African elephants and Asian elephants. You take a random sample of 35 male African elephants, who averaged 9.3 feet at the shoulder. The population standard deviation of African elephants is 0.7 feet. Then you take a random sample of 41 male Asian elephants, who averaged 8.9 feet at the shoulder. The population standard deviation of Asian elephants is 0.6 feet. At the 1% significance level, use a hypothesis test to test the study’s claim.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A shareholders' group is lodging a protest against your company. The shareholders group claimed that the...
A shareholders' group is lodging a protest against your company. The shareholders group claimed that the mean tenure for a chief exective office (CEO) was at least 10 years. A survey of 120 companies reported in The Wall Street Journal found a sample mean tenure of 9.3 years for CEOs with a standard deviation of s = 5.3 years (The Wall Street Journal, January 2, 2007). You don't know the population standard deviation but can assume it is normally distributed....
Suppose you want to test the notion that individuals perceive a greater height difference between men...
Suppose you want to test the notion that individuals perceive a greater height difference between men and women than actually exists, due to stereotyping. The true population difference between the height of men and women is an average of 5 inches. You obtain a random sample of 400 individuals and record their perceptions of the mean difference in height between men and women. You find that the sample perceives the difference between men and women to average 6 inches. The...
Young and Company claims that its pressurized diving bell will, on average, maintain its integrity to...
Young and Company claims that its pressurized diving bell will, on average, maintain its integrity to depths of 2500 feet or more. You take a random sample of 50 of the bells. The average maximum depth for bells in your sample is 2455 feet. Set up an appropriate hypothesis test using Young and Company’s claim as the null hypothesis. Assume the population standard deviation is 200 feet. Use a 5% significance level. What is the p-value that you calculate for...
This case study is about a study on coffee consumption of people that live in the...
This case study is about a study on coffee consumption of people that live in the United States. In total, 92 people were randomly selected and data was gathered regarding the annual consumption of coffee in gallons. Of these 92, 51 were females and 41 were males. You must show all work and formulas used in order to receive full credit. This includes showing all steps of the appropriate hypothesis test from the chapter notes. Round decimals in calculations to...
A.)You wish to test the following claim (HaHa) at a significance level of α=0.001α=0.001.  dd denotes the...
A.)You wish to test the following claim (HaHa) at a significance level of α=0.001α=0.001.  dd denotes the mean of the difference between pre-test and post-test scores.        Ho:μd=0Ho:μd=0 Ha:μd≠0Ha:μd≠0 You believe the population of difference scores is normally distributed, but you do not know the standard deviation. You obtain the following sample of data: post-test pre-test 58 73.9 71.3 53.3 65.2 74.5 57.2 48.4 66.1 39.6 49.6 35.9 60.8 103.6 70.8 96.9 49.2 13.2 65.5 72.2 51.2 42.4 45.9 66.4 55.3 32...
1. According to a recent report, 38% of adults wait until they are 30 years of...
1. According to a recent report, 38% of adults wait until they are 30 years of age or older to get married for the first time. A researcher believes this claimed value is too low. He gathers data in order to test the hypotheses Ho: p = 0.38 vs. Ha: p > 0.38. In these hypotheses, what does p represent? A. The sample proportion B. The population proportion C. The p-value D. The sample mean E. The population mean 2....
Belmont and Marolla conducted a study on the relationship between birth order, family size, and intelligence....
Belmont and Marolla conducted a study on the relationship between birth order, family size, and intelligence. The subjects consisted of all Dutch men who reached the age of 19 between 1963 and 1966. These men were required by law to take the Dutch army induction tests, including Raven’s intelligence test. The results showed that for each family size, measured intelligence decreased with birth order: first-borns did better than second-borns, second-borns did better than third-borns, and so on. And for any...
Belmont and Marolla conducted a study on the relationship between birth order, family size, and intelligence....
Belmont and Marolla conducted a study on the relationship between birth order, family size, and intelligence. The subjects consisted of all Dutch men who reached the age of 19 between 1963 and 1966. These men were required by law to take the Dutch army induction tests, including Raven’s intelligence test. The results showed that for each family size, measured intelligence decreased with birth order: first-borns did better than second-borns, second-borns did better than third-borns, and so on. And for any...
1. The mayor of a town has proposed a plan for the annexation of an adjoining...
1. The mayor of a town has proposed a plan for the annexation of an adjoining community. A political study took a sample of 900 voters in the town and found that 48% of the residents favored annexation. Using the data, a political strategist wants to test the claim that the percentage of residents who favor annexation is more than 44%. Find the value of the test statistic. Round your answer to two decimal places. 2. A newsletter publisher believes...
1. A recent study focused on the number of times men and women who live alone...
1. A recent study focused on the number of times men and women who live alone buy take-out dinner in a month. Assume that the distributions follow the normal probability distribution. The information is summarized below.   Statistic Men Women   Sample mean 24.71    21.94      Population standard deviation 5.53    4.71      Sample size 36    41       At the .01 significance level, is there a difference in the mean number of times men and women order take-out dinners in...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT