Mathematics, 17.10.2019 22:30 mobslayer88
Suppose, according to a 1990 demographic report, the average u. s. household spends $90 per day. suppose you recently took a random sample of 30 households in huntsville and the results revealed a mean of $84.50. suppose the standard deviation is known to be $14.50. using a 0.05 level of significance, a. can it be concluded that the average amount spent per day by u. s. households has decreased? ( provide 2 approached both the "t-test" and "p-value" approach.) b. create the 95 % confidence interval for the population mean using the information above?
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Mathematics, 21.06.2019 16:30
11. minitab software was used to find the lsrl for a study between x=age and y=days after arthroscopic shoulder surgery until an athlete could return to their sport. use the output to determine the prediction model and correlation between these two variables. predictor coef se coef t p constant -5.054 4.355 -1.16 0.279 age 0.2715 0.1427 1.9 0.094 r-sq = 31.16%
Answers: 2
Mathematics, 21.06.2019 17:30
The marriott family bought a new apartment three years ago for $65,000. the apartment is now worth $86,515. assuming a steady rate of growth, what was the yearly rate of appreciation? what is the percent of the yearly rate of appreciation?
Answers: 1
Mathematics, 21.06.2019 18:00
Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?
Answers: 2
Mathematics, 21.06.2019 19:10
Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15
Answers: 1
Suppose, according to a 1990 demographic report, the average u. s. household spends $90 per day. sup...
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