After a lot of work, a studio launches a new video game. The studio believes that gamers will like the game and in particular, states that the average rating,μ, that the players will grant you will be greater than85. The mean score of a random sample of54players is92.1.Suppose the population standard deviation of the scores is known to be21.1. Is there enough evidence to support the claim that the average player rating is higher than85? Perform a hypothesis test using the significance level of0.10.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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PART C
(c)Based on your answer to part (b), choose what can be concluded, at the significance level of 0.10, on the affirmation of the study.
____Since the value of the test statistic is in the rejection region, the null hypothesis is rejected. Therefore, there is enough evidence to support the claim that the average rating of the players is greater than
85
 
____Since the value of the test statistic is in the rejection region, the null hypothesis is not rejected. Therefore, there is not enough evidence to support the claim that the average player rating is greater than
85
 
___Since the value of the test statistic is not in the rejection region, the null hypothesis is rejected. Therefore, there is enough evidence to support the claim that the average rating of the players is greater than
85
 
____Since the value of the test statistic is not in the rejection region, the null hypothesis is not rejected. Therefore, there is not enough evidence to support the claim that the average player rating is greater than
85
.

 

standard normal distribution
Step 1: Select one queue or two
queues.
A tail
two tails
Step 2: Enter the critical value(s).
(Round to 3 decimal places.
Step 3: Enter the test statistic.
(Round to 3 decimal places.
0.4
0.3 +
0.2+
0.1
2
3
Ś
(c) Based on your answer to part (b), choose what can be concluded, at the significance level of0.10, on the affirmation of the study.
Since the value of the test statistic is in the rejection region, the null hypothesis is rejected. Therefore, there is
Transcribed Image Text:standard normal distribution Step 1: Select one queue or two queues. A tail two tails Step 2: Enter the critical value(s). (Round to 3 decimal places. Step 3: Enter the test statistic. (Round to 3 decimal places. 0.4 0.3 + 0.2+ 0.1 2 3 Ś (c) Based on your answer to part (b), choose what can be concluded, at the significance level of0.10, on the affirmation of the study. Since the value of the test statistic is in the rejection region, the null hypothesis is rejected. Therefore, there is
After a lot of work, a studio launches a new video game. The studio believes that gamers will like the game and in particular, states that the average rating‚µ‚
that the players will grant you will be greater than85. The mean score of a random sample of54players is92.1.Suppose the population standard deviation of the
scores is known to be21.1.
Is there enough evidence to support the claim that the average player rating is higher than85? Perform a hypothesis test using the significance level of0.10.
(a) Formulate the null hypothesish and the alternative hypothesish ₁.
ho:
h₁:0
●
• Z0.10is the value that delimits an area of0.10in the right tail.
μ
●
O<O
0²0
X
X
The test statistic has a normal distribution and the value is given byz =
OSO ☐>O
(b) Perform a hypothesis test. The test statistic has a normal distribution (so the test is a "testz "). This is other information that will help you with your
test.
0=0 ☐#0
Ś
χ-μ
O
√no
Transcribed Image Text:After a lot of work, a studio launches a new video game. The studio believes that gamers will like the game and in particular, states that the average rating‚µ‚ that the players will grant you will be greater than85. The mean score of a random sample of54players is92.1.Suppose the population standard deviation of the scores is known to be21.1. Is there enough evidence to support the claim that the average player rating is higher than85? Perform a hypothesis test using the significance level of0.10. (a) Formulate the null hypothesish and the alternative hypothesish ₁. ho: h₁:0 ● • Z0.10is the value that delimits an area of0.10in the right tail. μ ● O<O 0²0 X X The test statistic has a normal distribution and the value is given byz = OSO ☐>O (b) Perform a hypothesis test. The test statistic has a normal distribution (so the test is a "testz "). This is other information that will help you with your test. 0=0 ☐#0 Ś χ-μ O √no
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