Question 15 (1 point)
Your friend tells you that the proportion of active Major League Baseball players who have a batting average greater than .300 is different from 0.72, a claim you would like to test. The hypotheses here are Null Hypothesis: p = 0.72, Alternative Hypothesis: p ≠ 0.72. If you take a random sample of players and calculate p-value for your hypothesis test of 0.2296, what is the appropriate conclusion? Conclude at the 5% level of significance.
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Question 16 (1 point)
It is reported in USA Today that the average flight cost nationwide is $447.38. You have never paid close to that amount and you want to perform a hypothesis test that the true average is actually different from $447.38. The hypotheses for this situation are as follows: Null Hypothesis: μ = 447.38, Alternative Hypothesis: μ ≠ 447.38. If the true average flight cost nationwide is $447.38 and the null hypothesis is not rejected, did a type I, type II, or no error occur?
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15)
P value is > 0.05
Do not reject H0
So,
5th option
We did not find enough evidence to say a significant difference exists between the proportion of MLB players that have an average higher than .300 and 0.72 |
16)
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Question 15 (1 point) Your friend tells you that the proportion of active Major League Baseball...
Your friend tells you that the proportion of active Major League Baseball players who have a batting average greater than .300 is less than 0.7, a claim you would like to test. The hypotheses here are Null Hypothesis: p ≥ 0.7, Alternative Hypothesis: p < 0.7. If you take a random sample of players and calculate p-value for your hypothesis test of 0.3030, what is the appropriate conclusion? Conclude at the 5% level of significance. Question 15 options: 1) The...
Your friend tells you that the proportion of active Major League Baseball players who have a batting average greater than .300 is less than 0.77, a claim you would like to test. The hypotheses here are Null Hypothesis: p ≥ 0.77, Alternative Hypothesis: p < 0.77. If you take a random sample of players and calculate p-value for your hypothesis test of 0.1427, what is the appropriate conclusion? Conclude at the 5% level of significance. Question 6 options: 1) We...
Question 17 (1 point) It is reported in USA Today that the average flight cost nationwide is $472.49. You have never paid close to that amount and you want to perform a hypothesis test that the true average is actually less than $472.49. The hypotheses for this situation are as follows: Null Hypothesis: u 2 472.49, Alternative Hypothesis: u < 472.49. If the true average flight cost nationwide is $589.77 and the null hypothesis is rejected, did a type I,...
It is reported in USA Today that the average flight cost nationwide is $448.4. You have never paid close to that amount and you want to perform a hypothesis test that the true average is actually greater than $448.4. The hypotheses for this situation are as follows: Null Hypothesis: μ ≤ 448.4, Alternative Hypothesis: μ > 448.4. If the true average flight cost nationwide is $352.63 and the null hypothesis is rejected, did a type I, type II, or no...
A USA Today article claims that the proportion of people who believe global warming is a serious issue is 0.73, but given the number of people you've talked to about this same issue, you believe it is different from 0.73. The hypotheses for this test are Null Hypothesis: p = 0.73, Alternative Hypothesis: p ≠ 0.73. If you randomly sample 21 people and 12 of them believe that global warming is a serious issue, what is your test statistic and...
It is reported in USA Today that the average flight cost nationwide is $484.314. You have never paid close to that amount and you want to perform a hypothesis test that the true average is actually greater than $484.314. The hypotheses for this situation are as follows: Null Hypothesis: μ ≤ 484.314, Alternative Hypothesis: μ > 484.314. A random sample of 34 flights shows an average cost of $489.228 with a standard deviation of $53.5284. What is the test statistic...
The owner of a local golf course wants to examine the difference between the average ages of males and females that play on the golf course. Specifically, he wants to test if the average age of males is less than the average age of females. If the owner conducts a hypothesis test for two independent samples and calculates a p-value of 0.1447, what is the appropriate conclusion? Label males as group 1 and females as group 2. The average age...
Does the amount of hazardous material absorbed by the bodies of hazardous waste workers depend on gender? The level of lead in the blood was determined for a sample of men and a sample of women who dispose of hazardous waste as a full time job. You want to test the hypotheses that the amount absorbed by men is less than the amount absorbed by women. After performing a hypothesis test for two independent samples, you see a p-value of...
Question 12 (1 point) Consumers Energy states that the average electric bill across the state is $108.57. You want to test the claim that the average bill amount is actually greater than $108.57. The hypotheses for this situation are as follows: Null Hypothesis: μ ≤ 108.57, Alternative Hypothesis: μ > 108.57. You complete a randomized survey throughout the state and perform a one-sample hypothesis test for the mean, which results in a p-value of 0.6273. What is the appropriate conclusion?...
Question 12 (1 point) It is reported in USA Today that the average flight cost nationwide is $380.51. You have never paid close to that amount and you want to perform a hypothesis test that the true average is actually different from $380.51. The hypotheses for this situation are as follows: Null Hypothesis: u = 380.51, Alternative Hypothesis: u 380.51. You take a random sample of national flight cost information and perform a one sample mean hypothesis test. You observe...