Question
Salaries of 32 college graduates who took a statistics course in college have a mean x of $62,800. Assuming a standard deviation σ of $13,238. Construct a 95% confidence interval for estimating the population means µ
$____<µ<$______ round to the nearest integer as needed (Please Show Work)
9). Listed below are the budgets (in Millions of dollars) and the gross receipts (in millions of dollars) for randomly selected movies
Budget (x)| 65, 88, 50, 33, 196, 97, 95
Gross (y)| 63, 65, 49, 59, 620, 141 45
Find the value of the linear correlation coefficient r
R= round to three decimal places (Please Show work)
Question
Day Demand 1 200 2 134 3 157 4 165 5 177 6 125 7 146 8 150 9 182 10 197 11 136 Develop a spreadsheet to answer the following questions. 12 163
• Calculate a forecast of the above demand using a 3- and 5-period moving average. 13 157
• Graph these forecasts and the original data using Excel. What does the graph show? 14 169
• Which of the above forecasts is best? Why?
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