(d) When conducting a hypothesis test with the values given for the standard deviation, sample size, and a, how large must the increase from year 1 to year 2 be for it to be statistically significant? (Round your answer to two decimal places.) 1.294 × You may need to use the appropriate appendix table or technology to answer this question. Will improving customer service result in higher stock prices for the companies providing the better service? "When a company's satisfaction score has improved over the prior year's results and is above the national average (75.8), studies show its shares have a good chance of outperforming the broad stock market in the long run." The following satisfaction scores of three companies for the 4th quarters of two previous years were obtained from an economic indicator. Assume that the scores are based on a poll of 60 customers from each company. Because the polling has been done for several years, the standard deviation can be assumed to equal 6 points in each case. Company Year 1 Year 2 Company A 73 76 Company B 75 77 Company C 77 78

Q: I also Need help with part D please

A: The correlation coefficient is 0.8137.

Q: can you do the next two parts please

A:

Q: Step by step how do I solve this problem? Please help.

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Q: 券 2) Solve the inequality-3 + 3x <x+7. .

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: How do you know to do this?

A: or you can use Heron's Formula to find the area of the triangle.

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A: Given,         ∫2416-25n2dn

Q: How do you solve this problem?

A:

Q: can you do the next part

A: The set of vector  and We have to express the vector  in terms of the given set of vector

Q: Thank you so much

A:

Q: I need help solving these

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A:

Q: Can you help me solve this?

A:

Q: Evaluate then simplify: Stan (4p) sec (4p)dp

A:

Q: Can you add more detail for A

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Q: Please solution for part G,  Thanks!

A: (g) n=50, P(∑i=150Xi&lt;1124.54)=?

Q: Can you answer this question please?

A: Hey, since there is multiple sub part questions posted, we will answer first three sub part…

Q: could you provide an example please?

A: Let us take:  u→=0, 0, 0v→=1, 2, 3w→=4, 5, 6