Question 3 A consumer advocate group claims the average American household spends more than $874 during...
Question 3 A consumer advocate group claims the average American household spends more than $874 during Christmas. The claim is tested with a sample of 64 households and finds the average of the sample to be $905 with a standard deviation of $125. Level of significance is 0.05. Answer the following: a) write Ho and Ha and identify which is the claim b) identify whether its left, right or two tailed c) write the p-value d) decide whether to reject or fail to reject the null hypothesis e) interpret the final decision in the context of the original claim.
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Question 3 A consumer advocate group claims the average American
household spends more than $874 during...
A humane society claims that less than 35% of U.S. households own a dog. In a...
A humane society claims that less than 35% of U.S. households own a dog. In a random sample of 401 U.S. households,152 say they own a dog. A a=0.03, is there enough evidence to support the society's claim? (a) Write the claim mathematically and identify Upper H0 and Upper HaHa. (b) Find the critical value(s) and identify the rejection region(s). (c) Find the standardized test statistic. (d) Decide whether to reject or fail to reject the null hypothesis, and (e)...
A fitness magazine claims that the mean cost of a yoga session is not more than...
A fitness magazine claims that the mean cost of a yoga session is not more than $13. You work for a consumer group and are asked to test this claim. You find that a random sample of 27 yoga sessions has a mean cost of $14.32 and a standard deviation of $2.40. At ?-0.025, do you have enough evidence to reject the magazine's claim? Assume the population is normally distributed. a. Ho HA b. Find the critical value (s) and...
A humane society claims that less than 63% of households in a certain country own a...
A humane society claims that less than 63% of households in a certain country own a pet. In a random sample of 700 households in that country, 413 say they own a pet. At a=0.10, is there enough evidence to support the society's claim? Complete parts (a) through (c) below. (a) Identify the claim and state Ho and Ha. Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice....
A humane society claims that less than 73% of households in a certain country own a...
A humane society claims that less than 73% of households in a certain country own a pet. In a random sample of 400 households in that country, 284 say they own a pet. At a=0.10, is there enough evidence to support the society's claim? Complete parts (a) through (c) below. (a) Identify the claim and state Ho and H. Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice....
A consumer group claims that the mean minimum time it takes for a sedan to travel...
A consumer group claims that the mean minimum time it takes for a sedan to travel a quarter mile is greater than 14.6 seconds. A random sample of 23 sedans has a mean minimum time to travel a quarter mile of 15.4 seconds and a standard deviation of 2.12 seconds. At a = 0.05 is there enough evidence to support the consumer group's claim? Complete parts (a) through (d) below. Assume the population is normally distributed (Round to two decimal...
4. A private industry analyst claims that there is no difference in the salaries earned by...
4. A private industry analyst claims that there is no difference in the salaries earned by workers in the wholesale trade and manufacturing industries. The table shows the salaries (in thousands of dollars) of a random sample of 10 wholesale trade workers and 10 manufacturing workers. At a-0.1, can you reject the analyst's claim? Wholesale trade 70 66 65 80 62 69 73 77 74 72 Manufacturing 71 67 56 74 54 65 7o 58 64 52 In Exercises 3-4,...
A sociologist claims that children spent more time watching television in 1981 than children do t...
A sociologist claims that children spent more time watching television in 1981 than children do today. A study was conducted in 1981 to find the time that children watched television on weekdays. Recently, a similar study was conducted. The results of these studies (in hours per weekday) are shown below. Assume the population standard deviation is 0.7 for 1981 and 0.7 for today. At α=0.05, can you support the sociologist's claim? Complete parts (a) through (d) below. 1981 3.2 1.4...
A credit card company claims that the mean credit card debt for individuals is greater than...
A credit card company claims that the mean credit card debt for individuals is greater than $ 5,000. You want to test this claim. You find that a random sample of 34 cardholders has a mean credit card balance of $ 5,228 and a standard deviation of $ 550. At alpha equals 0.10, can you support the claim? Complete parts (b) through (e) below. Assume the population is normally distributed. (b) Find the critical value(s) and identify the rejection region(s)....
A humane society claims that 2g (a) through (e) below of households in a ce ar...
A humane society claims that 2g (a) through (e) below of households in a ce ar country own a cat. In a random sample o 200 households from hat country, 66 say they own a cat. At α=0.05 s there enough evidence o re ect the soc et 's claim? Compete parts Identify Ho and Ha H2 Type integers or decimals.) (b) Find the critical value(s) and identfy the rejection region s) The critical value(s) is/are zo (Round to two...
A company claims that the mean monthly residential electricity consumption in a certain region is more...
A company claims that the mean monthly residential electricity consumption in a certain region is more than 890 kilowatt-hours (kWh). You want to test this claim. You find that a random sample of 64 residential customers has a mean monthly consumption of 910 kWh. Assume the population standard deviation is 121 kWh. At a = 0.05, can you support the claim? Complete parts (a) through (e). (a) Identify Ho and Ha. Choose the correct answer below. O B. Ho u...
A fitness magazine claims that the mean cost of a yoga session is not more than $13. You work for a consumer group and are asked to test this claim. You find that a random sample of 27 yoga sessions has a mean cost of $14.32 and a standard deviation of $2.40. At ?-0.025, do you have enough evidence to reject the magazine's claim? Assume the population is normally distributed. a. Ho HA b. Find the critical value (s) and...
A humane society claims that less than 63% of households in a certain country own a pet. In a random sample of 700 households in that country, 413 say they own a pet. At a=0.10, is there enough evidence to support the society's claim? Complete parts (a) through (c) below. (a) Identify the claim and state Ho and Ha. Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice....
A humane society claims that less than 73% of households in a certain country own a pet. In a random sample of 400 households in that country, 284 say they own a pet. At a=0.10, is there enough evidence to support the society's claim? Complete parts (a) through (c) below. (a) Identify the claim and state Ho and H. Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice....
A consumer group claims that the mean minimum time it takes for a sedan to travel a quarter mile is greater than 14.6 seconds. A random sample of 23 sedans has a mean minimum time to travel a quarter mile of 15.4 seconds and a standard deviation of 2.12 seconds. At a = 0.05 is there enough evidence to support the consumer group's claim? Complete parts (a) through (d) below. Assume the population is normally distributed (Round to two decimal...
4. A private industry analyst claims that there is no difference in the salaries earned by workers in the wholesale trade and manufacturing industries. The table shows the salaries (in thousands of dollars) of a random sample of 10 wholesale trade workers and 10 manufacturing workers. At a-0.1, can you reject the analyst's claim? Wholesale trade 70 66 65 80 62 69 73 77 74 72 Manufacturing 71 67 56 74 54 65 7o 58 64 52 In Exercises 3-4,...
A humane society claims that 2g (a) through (e) below of households in a ce ar country own a cat. In a random sample o 200 households from hat country, 66 say they own a cat. At α=0.05 s there enough evidence o re ect the soc et 's claim? Compete parts Identify Ho and Ha H2 Type integers or decimals.) (b) Find the critical value(s) and identfy the rejection region s) The critical value(s) is/are zo (Round to two...
A company claims that the mean monthly residential electricity consumption in a certain region is more than 890 kilowatt-hours (kWh). You want to test this claim. You find that a random sample of 64 residential customers has a mean monthly consumption of 910 kWh. Assume the population standard deviation is 121 kWh. At a = 0.05, can you support the claim? Complete parts (a) through (e). (a) Identify Ho and Ha. Choose the correct answer below. O B. Ho u...
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