Mathematics, 17.12.2021 05:20 victory08

If I tell my kid "Go to bed" the amount of time it takes for her to actually go to bed is normally distributed with a standard deviation of 8.6 minutes. I want an 83% confidence interval to estimate the average time that it takes my 2.5 year old daughter to go to bed after saying "Go to bed" the first time. I collected the sample for 15 nights and the mean time over 15 nights is 29.18 minutes. What is the z-score I will need for my confidence interval? Use three decimal places lower end of the interval (use three decimal places): upper end of the interval (use three decimal places): Now assume that the standard deviation is not known and the sample standard deviation is 8.2 minutes. I will again construct a 83% confidence interval. Lower end of the interval (use three decimal places): Upper end of the interval (use three decimal places):

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 15:20, poreally1446

If x=-3 is the only x-intercept of the graph of a quadratic equation, which statement best discribes the discriminant of the equation?

Answers: 1

continue

Mathematics, 21.06.2019 16:30, reyesortiz6955

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

Answers: 1

continue

Mathematics, 21.06.2019 23:00, sugar1014

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.

Answers: 1

continue

Mathematics, 22.06.2019 02:00, mochoa4

Einstein office equipment has a rental plan for office machines. a fax machine that lists for $722.98 can be rented for 22% of the price annually. the state imposes a usage charge of 3.2%. if stephen hawking travel decides to rent the fax machine, what will its total monthly rental charge be?

Answers: 2

continue

You know the right answer?

If I tell my kid "Go to bed" the amount of time it takes for her to actually go to bed is normally d...