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Q1) Kim Davis has decided to buy a cellular phone, but she is unsure about which rate plan to choose. "Regular" plan charges fixed fee of= $55 per month for 1,000 minutes of airtime plus $0.33 per minute for any time over 1,000 minutes. "Executive" plan charges a fixed fee of $100 per month for 1,200 minutes of airtime plus $0.25 per minute over 1,200 minutes.
a) If Kim expects to use phone for 21 hours per month, which plan must she choose?
b) At what level of utilize would Kim be indifferent between two plans?
Linear programming problems. Computethe following linear programming problem. Among which of the following points (X,Y) is feasible.
Determine a 90% confidence interval estimate of the mean head circumference of all two-month-old babies.
The results of the simple linear regression are provided below.
Use this information to compute a 95% confidence interval for average number of credit cards carried by students.
Is there a significant difference the four testing conditions?
Based on a scatter diagram, would you estimate the linear correlation coefficient to be:
Assume P1 and P2 move simultaneously. Represent this game in normal form.
Explain how much should the airport authority be willing to pay for perfect information about the success of a brand new airport.
What fraction of the calls last between 4.2 and 5 minutes?
Is your sample of MSU students significantly different from the population of MSU students in terms of the number of classes they take per semester (use alpha level .05)? To answer this question, follow all of your steps for hypothesis testing.
The standard deviation of the differences d for the paired sample data s d = ____________
If there is relationship between parental income and SAT score, why can't we bring to a close that differences in score are caused by differences in parental income.
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