Question
Just wondering if someone cam help me with this? 1. A grocery store manager is interested in testing the claim that banana is the favorite
Just wondering if someone cam help me with this?
1. A grocery store manager is interested in testing the claim that banana is the favorite fruit for more than 50% of the adults. The manager conducted a survey on a random sample of 100 adults. The survey showed that 56 adults in the sample chose banana as his/her favorite fruit. Assume the manager wants to use a 0.05 significance level to test the claim.
(a) What is the appropriate hypothesis test to use for this analysis? Please identify and explain why it is appropriate.
(b) Identify the null hypothesis and the alternative hypothesis.
(c) Determine the test statistic. Round your answer to two decimal places.Describe
method used for obtaining the test statistic.
(d) Determine the p-value. Round your answer to three decimal places.Describe method used for obtaining the p-value.
(e) Compare p-value and significance level . What decision should be made regardingthe null hypothesis (e.g., reject or fail to reject) and why?
(f) Is there sufficient evidence to support the claim that banana is the favorite fruit for more than 50% of the adults? Explain your conclusion.
2. A business analyst believes that December holiday sales in 2016 are a good predictor of December holiday sales in 2017. A random sample of 8 toys stores produced the following data wherexis the amount of December holiday sales in 2016 andyis the amount of December sales in 2017, in dollars.
(a) Find an equation of the least squares regression line. Round the slope and y-intercept value to two decimal places.Describe method for obtaining results.
(b) Based on the equation from part (a), what is the predicted 2017 December holiday sales if the 2016 December holiday sales is 6,000 dollars?Show all work and justify your answer.
(c) Based on the equation from part (a), what is the predicted 2017 December holiday sales if the 2016 December holiday sales is 20,000 dollars?Show all work and justify your answer.
(d) Which predicted 2017 holiday sales that you calculated for (b) and (c) do you think is closer to the true predicted 2017 holiday sales and why?
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