A politician claims that the mean salary for managers in his state is more than the...
A politician claims that the mean salary for managers in his state is more than the national mean, $84 comma 000. Assume the the population is normally distributed and the population standard deviation is $7400. The salaries (in dollars) for a random sample of 30 managers in the state are listed. At alphaequals0.08, is there enough evidence to support the claim? Use technology. 98,343 97,290 75,444 94,384 89,154 81,308 85,778 79,977 79,412 75,790 76,436 77,739 97,136 79,785 85,614 79,494 94,950 88,663 71,232 79, 467 89,165 78,261 92,485 88,072 86,726 92,817 74,373 82,032 86,186 85, 925 Identify the standard test statistics.
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A politician claims that the mean salary for managers in his
state is more than the...
please round to THREE decimal places as needed A politician claims that the mean salary for...
please round to THREE decimal places as needed
A politician claims that the mean salary for managers in his state is more than the national mean, $83,000. Assume the the population is normally distributed and the population standard deviation is $9400. The salaries (in dollars) for a random sample of 30 managers in the state are listed. At α = 0.04 is there enough evidence to support the claim? Use technology 83,077 72,906 94,387 89,800 73,672 78,747 90,948 91,023 95...
An employment information service claims the mean annual salary for senior level product engineers is $99,000....
An employment information service claims the mean annual salary for senior level product engineers is $99,000. The annual salaries (in dollars) for a random sample of 16 senior level product engineers are shown in the table to the right. At a 0.01, test the claim that the mean salary is $99,000. Complete parts (a) through (e) below. Assume the population is normally distributed. Annual Salaries 100,635 96.368 93,589 12,740 82,551 74.199 76.962 81,034 102.465 76,125 103,998 103,921 91,002 82,036 85.119...
An employment information service claims the mean annual salary for senior level product engineers is $97,000....
An employment information service claims the mean annual salary for senior level product engineers is $97,000. The annual salaries (in dollars) for a random sample of 16 senior level product engineers are shown in the table to the right. At α= 0.01, test the claim that the mean salary is $97,000. Complete parts (a) through (e) below. Assume the population is normally distributed. Annual Salaries 100,649 96.269 93,552 112,654 82,582 74,262 77.001 80,963 02,514 76,124 104,116 103,965 91,020 82,109 85,136...
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...
An oceanographer claims that the mean dive duration of a North Atlantic right whale is 11...
An oceanographer claims that the mean dive duration of a North Atlantic right whale is 11 4 minutes. A random sample of 34 dive durations has a mean of 12 2 minutes and a standard deviation of 23 minutes. At a=001 is there enough evidence to reject the oceanographer's claim? Complete parts (a) through (d) below. Assume the population is normally distributed. (a) Identify the claim and state (b) Use technology to find the P-value. Find the standardized test statistic, (Round to...
1. A baseball team claims that the mean length of its games is 2.8 hours. State...
1. A baseball team claims that the mean length of its games is 2.8 hours. State H0 and Ha in words and in symbols. Then determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed. Explain your reasoning. State the null hypothesis in words and in symbols. Choose the correct answer below. 2. An Internet provider is trying to gain advertising deals and claims that the mean time a customer spends online per day is greater than...
In an advertisement, a pizza shop claims that its mean delivery time is no more than...
In an advertisement, a pizza shop claims that its mean delivery time is no more than 30 minutes. A random selection of 36 delivery times has a sample mean of 31.5 minutes. Assume the population standard deviation is 3.5 minutes and alpha is 0.02. ved Answer the following using the classical approach for hypothesis testing. Indicate the symbol in the Ha statement. Calculate the test statistic, z'. Is the critical region(s) left tailed, right tailed, or two tailed? As What...
17 and 18 please. Thank you. gleater than 700 pounds? DIe 81 31 female giraffes are chosen. The mean height is found to be 15 feet. Assume that the population standard deviation for the height of...
17 and 18 please. Thank you.
gleater than 700 pounds? DIe 81 31 female giraffes are chosen. The mean height is found to be 15 feet. Assume that the population standard deviation for the height of female giraffes is。 5 feet. Calculate the 85% confidence interval of for population mean height of female giraffes. 16) A sample of 21 male giraffes are chosen. The mean height is found to be 17.5 feet. The standard deviation of the sample is found...
0 A personnel director in a particular state claims that the mean annual income is the...
0 A personnel director in a particular state claims that the mean annual income is the same in one of the state's counties (County A) as it is in another county (County B). In County A, a random sample of 17 residents has a mean annual income of $41,200 and a standard deviation of $8400. In County B, a random sample of 14 residents has a mean annual income of $39,000 and a standard deviation of $5900. At a =...
(2) A state executive claims that the average cost of tuition at public colleges is $5700....
(2) A state executive claims that the average cost of tuition at public colleges is $5700. A researcher wishes to test the claim that this cost is greater than $5700. She selects a random sample of 36 public colleges and finds the mean to be $5950.The population standard deviation is $659. Is there enough evidence to support the claim that the cost of tuition is greater than $5700 at a 0.05?
please round to THREE decimal places as needed
A politician claims that the mean salary for managers in his state is more than the national mean, $83,000. Assume the the population is normally distributed and the population standard deviation is $9400. The salaries (in dollars) for a random sample of 30 managers in the state are listed. At α = 0.04 is there enough evidence to support the claim? Use technology 83,077 72,906 94,387 89,800 73,672 78,747 90,948 91,023 95...
An employment information service claims the mean annual salary for senior level product engineers is $99,000. The annual salaries (in dollars) for a random sample of 16 senior level product engineers are shown in the table to the right. At a 0.01, test the claim that the mean salary is $99,000. Complete parts (a) through (e) below. Assume the population is normally distributed. Annual Salaries 100,635 96.368 93,589 12,740 82,551 74.199 76.962 81,034 102.465 76,125 103,998 103,921 91,002 82,036 85.119...
An employment information service claims the mean annual salary for senior level product engineers is $97,000. The annual salaries (in dollars) for a random sample of 16 senior level product engineers are shown in the table to the right. At α= 0.01, test the claim that the mean salary is $97,000. Complete parts (a) through (e) below. Assume the population is normally distributed. Annual Salaries 100,649 96.269 93,552 112,654 82,582 74,262 77.001 80,963 02,514 76,124 104,116 103,965 91,020 82,109 85,136...
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...
In an advertisement, a pizza shop claims that its mean delivery time is no more than 30 minutes. A random selection of 36 delivery times has a sample mean of 31.5 minutes. Assume the population standard deviation is 3.5 minutes and alpha is 0.02. ved Answer the following using the classical approach for hypothesis testing. Indicate the symbol in the Ha statement. Calculate the test statistic, z'. Is the critical region(s) left tailed, right tailed, or two tailed? As What...
17 and 18 please. Thank you.
gleater than 700 pounds? DIe 81 31 female giraffes are chosen. The mean height is found to be 15 feet. Assume that the population standard deviation for the height of female giraffes is。 5 feet. Calculate the 85% confidence interval of for population mean height of female giraffes. 16) A sample of 21 male giraffes are chosen. The mean height is found to be 17.5 feet. The standard deviation of the sample is found...
0 A personnel director in a particular state claims that the mean annual income is the same in one of the state's counties (County A) as it is in another county (County B). In County A, a random sample of 17 residents has a mean annual income of $41,200 and a standard deviation of $8400. In County B, a random sample of 14 residents has a mean annual income of $39,000 and a standard deviation of $5900. At a =...
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