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(a)
(i)
The level of significance and state the null and alternative hypotheses.
(ii)
The sampling distribution to be used and explain the assumptions and also explain and also find the value of sample test statistic.
(iii)
To find: The P-value of the sample statistic and sketch the sampling distribution and show the area corresponding to the P-value.
(iv)
Whether we reject or fail to reject the null hypothesis and whether the data statistically significant at level
(v)
To explain: The conclusion in the context of application.
(b)
To find: The 95% confidence interval for
(c)
To explain: The assumptions about the original populations.
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Chapter 11 Solutions
Bundle: Understanding Basic Statistics, Loose-leaf Version, 7th + WebAssign Printed Access Card for Brase/Brase's Understanding Basic Statistics, ... for Peck's Statistics: Learning from Data
- Question 2 The data below provides the battery life of thirty eight (38) motorcycle batteries. 100 83 83 105 110 81 114 99 101 105 78 115 74 96 106 89 94 81 106 91 93 86 79 103 94 108 113 100 117 120 77 93 93 85 76 89 78 88 680 a. Test the hypothesis that mean battery life is greater than 90. Use the 1% level of significance. b. Determine if the mean battery life is different from 80. Use the 10% level of significance. Show all steps for the hypothesis test c. Would your conlcusion in part (b) change at the 5% level of significance? | d. Confirm test results in part (b) using JASP. Note: All JASP input files and output tables should be providedarrow_forwardSuppose that 80% of athletes at a certain college graduate. You randomly select eight athletes. What’s the chance that at most 7 of them graduate?arrow_forwardSuppose that you flip a fair coin four times. What’s the chance of getting at least one head?arrow_forward
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