You are conducting a hypothesis test where the null hypothesis is that your daily sales is...
You are conducting a hypothesis test where the null hypothesis is that your daily sales is $300. You have 22 days of data. Calculate the t statistic if your sample mean is $318 and your sample standard deviation is $12
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You are conducting a hypothesis test where the null hypothesis
is that your daily sales is...
You are conducting a two-tailed hypothesis test to see if your sample mean (x̄) differs significantly...
You are conducting a two-tailed hypothesis test to see if your sample mean (x̄) differs significantly from your population mean (μ = 50). Your alpha level is 0.05 (α = 0.05). Sample data: 53, 56, 59, 64, 55, 42, 36, 58, 39, 53, 62, 60, 64, 53, 42, 53, 65, 60, 61, 63 You will need to: h) State your alternative hypothesis and null hypothesis i) Calculate the sample mean (x̄) j) Calculate the sample standard deviation (s) k) Calculate...
You are conducting a t-test to assess the null hypothesis H0: μ = 50 against the...
You are conducting a t-test to assess the null hypothesis H0: μ = 50 against the two-sided alternative. You collect a random sample of n=25 observations. The sample has a mean of 55 and a standard deviation of 10. How many degrees of freedom does the test have? Assume the underlying distribution is normal.
Identify the null hypothesis. alternative hypothesis, test statistic, decision about the null hypothesis and final conclusion...
Identify the null hypothesis. alternative hypothesis, test statistic, decision about the null hypothesis and final conclusion that addresses the original claim Various temperature measurements are recorded at different times for a particular city. The mean of 20 degrees is obtained for 60 temperatures on 60 different days. Assuming that the population standard deviation is 1.5 degrees, test the claim that the population mean is 22 degrees. Use a 0.05 significance level Hou = 22; H1 is u# 22 Test statistic:...
In performing a hypothesis test where the null hypothesis is that the population mean is 4.8...
In performing a hypothesis test where the null hypothesis is that the population mean is 4.8 against the alternative hypothesis that the population mean is not equal to 4.8, a random sample of 25 items is selected. The sample mean is 4.1 and the sample standard deviation is 1.4. It can be assumed that the population is normally distributed. The observed "t" value for this problem is _______.
4. (17 points) You have a food cart. Your daily revenue is normally distributed with a mean of $5...
4. (17 points) You have a food cart. Your daily revenue is normally distributed with a mean of $500 and a standard deviation of $100. » Suppose there is another location that might be worth switching to » You plan to experiment with selling there for awhile, and then use a one-sided hypothesis test with α-.05 to determine whether you should switch. (a) (5 points) If you experiment with selling in the new location for n days, how high does...
In a test of hypothesis, the null hypothesis is that the population mean is equal to...
In a test of hypothesis, the null hypothesis is that the population mean is equal to 90 and the alternative hypothesis is that the population mean is not equal to 90. The test is to be made at the 10% significance level. A sample of 100 elements selected from this population produced a mean of 84 and a standard deviation of 8. What is the value of the observed test statistic, z?
A hypothesis test is conducted to test the null hypothesis that the mean is less than...
A hypothesis test is conducted to test the null hypothesis that the mean is less than 12. Use a 0.01 level of significance. What type of test is this? Right tail Two tail Left tail What is the critical value? 2.33 -2.33 1.78 correct answer is not given Suppose the test statistic was -2.50 What is the conclusion? Fail to reject Ho. There is not sufficent evidence to support the claim that the mean is less than 12. Reject Ho....
Question 22 3 pts Suppose you are interested in testing a null hypothesis and the p-value...
Question 22 3 pts Suppose you are interested in testing a null hypothesis and the p-value associated with the test statistic is 0.004. As a result, you should o reject the null hypothesis at the 5-percent level of significance, but not at the 1- percent level of significance. do not reject the null hypothesis at the 5-percent level of significance, but do reject the null at the 1-percent level of significance. o do not reject the null hypothesis at the...
dentify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final...
dentify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. The typical drying time for a new finger nail polish is 4.5 minutes on average. A random sample of 16 painted fingers produced a sample with a mean of 4.1 and a standard deviation of 0.8 minutes. Complete the appropriate test to determine if this drying time is statistically less time. (Use a 4 or 5 step method)
11. If we reject the null hypothesis, what can we conclude, subject to the probability, α?...
11. If we reject the null hypothesis, what can we conclude, subject to the probability, α? Multiple Choice Reject the null with a probability, α, of making a Type I error. The alternative hypothesis is false. The null hypothesis is true. Both the null hypothesis and the alternative hypothesis are true. 12. The average cost of tuition and room and board at a small private liberal arts college is reported to be $8,500 per term. A financial administrator believes that...
Identify the null hypothesis. alternative hypothesis, test statistic, decision about the null hypothesis and final conclusion that addresses the original claim Various temperature measurements are recorded at different times for a particular city. The mean of 20 degrees is obtained for 60 temperatures on 60 different days. Assuming that the population standard deviation is 1.5 degrees, test the claim that the population mean is 22 degrees. Use a 0.05 significance level Hou = 22; H1 is u# 22 Test statistic:...
4. (17 points) You have a food cart. Your daily revenue is normally distributed with a mean of $500 and a standard deviation of $100. » Suppose there is another location that might be worth switching to » You plan to experiment with selling there for awhile, and then use a one-sided hypothesis test with α-.05 to determine whether you should switch. (a) (5 points) If you experiment with selling in the new location for n days, how high does...
Question 22 3 pts Suppose you are interested in testing a null hypothesis and the p-value associated with the test statistic is 0.004. As a result, you should o reject the null hypothesis at the 5-percent level of significance, but not at the 1- percent level of significance. do not reject the null hypothesis at the 5-percent level of significance, but do reject the null at the 1-percent level of significance. o do not reject the null hypothesis at the...
dentify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. The typical drying time for a new finger nail polish is 4.5 minutes on average. A random sample of 16 painted fingers produced a sample with a mean of 4.1 and a standard deviation of 0.8 minutes. Complete the appropriate test to determine if this drying time is statistically less time. (Use a 4 or 5 step method)
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