Question

Consider the following hypotheses: Ho : 250 HA: L < 250 The population is normally distributed. A sample produces the following observations: 237 230 231 247 248 239 Conduct the test at the 5% level of significance: (You may find it useful to reference the appropriate table: z table or t table) Calculate the value of the test statistic. (Negative value should be indicated by minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places) Test statistic b. Find the p-value. p-value < 0.01; 0.05 < p-value < 0.10; 0.025 < p-value < 0.05; 0.01 < p-value < 0.025 c. What is the conclusion? Do not reject Ho since the p-value is less than the significance level. Do not reject Ho since the p-value is greater than the significance level. Reject Ho since the p-value is less than the significance level. Reject Ho since the p-value is greater than the significance level. d. Interpret the results at the 5% significance level. We cannot conclude that the population mean is less than 250. We conclude that the population mean is less than 250. We cannot conclude that the population mean is greater than 250. We conclude that the population mean is greater than 250.

          Consider the following hypotheses: Ho : 250 HA: L < 250
The population is normally distributed. A sample produces the following observations:
237 230 231 247 248 239
Conduct the test at the 5% level of significance: (You may find it useful to reference the appropriate table: z table or t table)
Calculate the value of the test statistic. (Negative value should be indicated by minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places)
Test statistic
b. Find the p-value.
p-value < 0.01; 0.05 < p-value < 0.10; 0.025 < p-value < 0.05; 0.01 < p-value < 0.025
c. What is the conclusion?
Do not reject Ho since the p-value is less than the significance level. Do not reject Ho since the p-value is greater than the significance level. Reject Ho since the p-value is less than the significance level. Reject Ho since the p-value is greater than the significance level.
d. Interpret the results at the 5% significance level.
We cannot conclude that the population mean is less than 250. We conclude that the population mean is less than 250. We cannot conclude that the population mean is greater than 250. We conclude that the population mean is greater than 250.

Added by James A.

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