It is believed that the average grade on an English essay in a particular school system for females is higher than for males. A random sample of 12 females had a mean score of 82 with a standard deviation of three, and a random sample of 8 males had a mean score of 76 with a standard deviation of four.  Select the null and alternative hypotheses.

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A: From the provided information,

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A:

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A:

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Q: It is believed that the average grade on an English essay in a particular school system for females…

A: Claim: average grade on an English essay in a particular school system for females is higher than…

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A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: According to the Annual survey of drugs expenditure in country X, the annual expenditure for…

A: (1) State the hypotheses. That is, there is no evidence that the population annual expenditure for…

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A: We have to find hypothesis..

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A: Given that sample size n = 15 Sample mean = 31080 Sample SD = 400 Level of significance = 0.01

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A:

Q: Is there any systematic tendency for part-time college faculty to hold their students to different…

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Q: Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on the…

A: Here, Claim: Teenagers spent higher than 4.5                     hours per week,on average,on the…

Q: According to the Annual Survey of Drug expenditure in country X, the annual expenditure for…

A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any…

Q: NebNas manages the credit department for a grocery store chain in the province, and she would like…

A: Given, The null hypothesis, H0:μ=95 The alternative hypothesis, H1:μ≠95 sample size, n=100 sample…

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A:

Q: A manufacturer claims that a particular automobile will get at least 50 miles per gallon on the…

A: Note: Hey, since multiple questions are posted, we will answer first question for you. If you want…