TESTING HYPOTHESIS - MEAN

A fast food outlet claims that the mean waiting time in line is less than 1.9 minutes. A random sample of 20 customers has a mean of 1.7 minutes with a standard deviation of 0.8 minute. If α = 0.05, test the fast food outlet's claim using P-values.

• Reject Ho

• Reject Ha

• Fail to reject Ho

• Fail to reject Ha

A fast food outlet claims that the mean waiting time in line is less than 1.9 minutes. A random sample of 20 customers has a mean of 1.7 minutes with a standard deviation of 0.8 minute. If α = 0.05, test the fast food outlet's claim using P-values.

• There is enough evidence to reject the claim

• There is not enough evidence to reject the claim

• There is enough evidence to support the claim

• There is not enough evidence to support the claim

A fast food outlet claims that the mean waiting time in line is less than 3.5 minutes. A random sample of 20 customers has a mean of 3.7 minutes with a standard deviation of 0.8 minute. If α = 0.05, test the fast food outlet's claim.

• Reject Ho

• Reject Ha

• Fail to reject Ho

• Fail to reject Ha

A fast food outlet claims that the mean waiting time in line is less than 3.5 minutes. A random sample of 20 customers has a mean of 3.7 minutes with a standard deviation of 0.8 minute. If α = 0.05, test the fast food outlet's claim.

• There is enough evidence to reject the claim

• There is not enough evidence to reject the claim

• There is enough evidence to support the claim

• There is not enough evidence to support the claim

A sample of 35 cans of Campbell’s Tomato Soup found that the net weight of the cans was 298 grams with a standard deviation of 24 grams. The production line supervisor has been told that the net weight of all cans is 308 grams. Is there enough evidence, at the 5% level, to say that the weight of the cans is something other than 308 grams?

• Reject Ho

• Reject Ha

• Fail to reject Ho

• Fail to reject Ha

A sample of 35 cans of Campbell’s Tomato Soup found that the net weight of the cans was 298 grams with a standard deviation of 24 grams. The production line supervisor has been told that the net weight of all cans is 308 grams. Is there enough evidence, at the 5% level, to say that the weight of the cans is something other than 308 grams?

• There is enough evidence to reject the claim

• There is not enough evidence to reject the claim

• There is enough evidence to support the claim

• There is not enough evidence to support the claim

The Quick Stop claims that the Big Slurp will contain 48 ounces of drink. You decide to test this claim because you feel the actual amount is lower. Over the next few weeks, you buy 50 Big Slurps and find the average amount of drink is 47 ounces with a standard deviation of 2.75 ounces. At α = 0.05, can you reject the Quick Stop’s claim?

• Reject Ho

• Reject Ha

• Fail to reject Ho

• Fail to reject Ha

The Quick Stop claims that the Big Slurp will contain 48 ounces of drink. You decide to test this claim because you feel the actual amount is lower. Over the next few weeks, you buy 50 Big Slurps and find the average amount of drink is 47 ounces with a standard deviation of 2.75 ounces. At α = 0.05, can you reject the Quick Stop’s claim?

• There is enough evidence to reject the Ho

• There is not enough evidence to reject the Ho

• There is enough evidence to support the Ho

• There is not enough evidence to support the Ho

A cereal company claims the mean sodium content in one serving of its cereal is no more than 230 mg. You work for a national health service and are asked to test this claim. You find that a random sample of 52 servings has a mean sodium content of 232 mg and a standard deviation of 10 mg. At α = 0.05, do you have enough evidence to reject the company’s claim?

• Reject Ho

• Reject Ha

• Fail to reject Ho

• Fail to reject Ha

A cereal company claims the mean sodium content in one serving of its cereal is no more than 230 mg. You work for a national health service and are asked to test this claim. You find that a random sample of 52 servings has a mean sodium content of 232 mg and a standard deviation of 10 mg. At α = 0.05, do you have enough evidence to reject the company’s claim?

• There is enough evidence to reject claim

• There is not enough evidence to reject claim

• There is enough evidence to support claim

• There is not enough evidence to support claim