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? Conclude at the 5% level of significance.
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Question 12 (1 point) Consumers Energy states that the average electric bill across the state is $108.57. You want to te...
Consumers Energy states that the average electric bill across the state is $123.29. You want to test the claim that the average bill amount is actually different from $123.29. The hypotheses for this situation are as follows: Null Hypothesis: μ = 123.29, Alternative Hypothesis: μ ≠ 123.29. 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 0.3178. What is the appropriate conclusion? Conclude at the 5%...
Consumers Energy states that the average electric bill across the state is $42.22. You want to test the claim that the average bill amount is actually less than $42.22. The hypotheses for this situation are as follows: Null Hypothesis: μ ≥ 42.22, Alternative Hypothesis: μ < 42.22. If the true statewide average bill is $30.44 and the null hypothesis is rejected, did a type I, type II, or no error occur? Question 15 options: 1) Type I Error has occurred....
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...
Question 9 (1 point) The owner of a golf course wants to determine if his golf course is more difficult than the one his friend owns. He has 10 golfers play a round of 18 holes on his golf course and records their scores. Later that week, he has the same 10 golfers play a round of golf on his friend's course and records their scores again. The average! difference in the scores (treated as the scores on his course...
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. Question...
It is reported in USA Today that the average flight cost nationwide is $458.78. You have never paid close to that amount and you want to perform a hypothesis test that the true average is actually less than $458.78. The hypotheses for this situation are as follows: Null Hypothesis: μ ≥ 458.78, Alternative Hypothesis: μ < 458.78. You take a random sample of national flight cost information and perform a one sample mean hypothesis test. You observe a p-value of...
Part A: A restaurant wants to test a new in-store marketing scheme in a small number of stores before rolling it out nationwide. The new ad promotes a premium drink that they want to increase the sales of. 5 locations are chosen at random and the number of drinks sold are recorded for 2 months before the new ad campaign and 2 months after. The average difference in the sales quantity (after - before) is -42.749 with a standard deviation...
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 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...