Mathematics, 01.03.2021 22:50 yam78

In a survey, 13 people were asked how much they spent on their child's last birthday gift. The results were roughly shaped as a normal curve with a mean of $40 and standard deviation of $18. Construct a confidence interval at a 98% confidence level. Give your answers to one decimal place.

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 16:10, dhernandez081

To find the extreme values of a function f(x. y) on a curve x-x(t), y y(t), treat f as a function of the single variable t and use the chain rule to find where df/dt is zero. in any other single-variable case, the extreme values of f are then found among the values at the critical points (points where df/dt is zero or fails to exist), and endpoints of the parameter domain. find the absolute maximum and minimum values of the following function on the given curves. use the parametric equations x=2cos t, y 2 sin t functions: curves: i) the semicircle x4,y20 i) the quarter circle x2+y-4, x20, y20 b, g(x, y)=xy

Answers: 2

continue

Mathematics, 21.06.2019 17:00, travisvb

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Answers: 2

continue

Mathematics, 21.06.2019 19:00, megababe04

What are the solutions of the equation? 16x^2 + 24x + 5 = 5 a. 1/4, 5/4 b. -1/4, -5/4 c. -1/4, 5/4 d. 1/4 , -5/4

Answers: 1

continue

Mathematics, 21.06.2019 19:00, vhs35

What is the factored form of the following expressions? d^2 – 13d + 36