b) what is appropriate pvalue for the test conducted in part a ? p value 0.200 c) construct a 99% confidence interval for the difference in the average prices for the two supermarket chainsinterpret this interval

A survey was conducted by an independent price-checking company to check an advertiser's claim that it had lower prices than it competitors. The average weekly total, based on the prices of approximately 95 items, is given for this chain and for its competitor recorded during four consecutive weeks in a particular month. Week Advertiser ($) Competitor ($) 1 254.18 256.07 2 240.64 255.58 3 231.92 255.05 4 234.08 261.16 LA USE SALT (a) Is there a significant difference in the average prices for these two different supermarket chains? (Use a = 0.05. Use "advertiser - /competitor = "d") State the null and alternative hypotheses. O Ho: Ha = 0 versus Ha: Hd > 0 O Ho: Mg = 0 versus Ha: Hd = 0 O Ho: Ma = 0 versus Ha: Hd * 0 O Ho: My 0 O Ho: Ha = 0 versus Ha: Hd t State the conclusion. O Ho is rejected. There is sufficient evidence to indicate that the means are different. O Ho is not rejected. There is insufficient evidence to indicate that the means are different. O Ho is not rejected. There is sufficient evidence to indicate that the means are different