Test the claim that the mean time required for high school students to run 1 mile is greater than 7 minutes at the 0.05 level of significance. Here are the results of a random sample of 25 students. 7.3 7.7 9.2 8.8 7.6 7.2 6.6 6.4 8.0 7.5 7.5 7.7 8.1 8.6 6.8 6.9 7.5   7.3 7.8 8.2 10.4 11.6 7.2 7.7 7.0

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A: Mean(µ) = 330Standard deviations (σ) = 115X ~ N (µ, σ )= N(330, 115)

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Q: B7. An estate agent wants to test whether mean house prices are the same regardless of which of 3…

A: The data shows the house purchases in 3 areas yields the price.

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A: Assume that μ defines the mean amount spent for lunch of all customers.

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A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

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A: Null hypothesis is denoted by Ho.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.