Mathematics, 29.11.2019 00:31 ltuthill
Apublisher wants to estimate the mean length of time (in minutes) all adults spend reading newspapers. to determine this estimate, the publisher takes a random sample of 15 people and obtains the following results:
11, 9, 8, 10, 10, 9, 7, 11, 11, 7, 6, 9, 10, 8, 10
assume that the population of times is normally distributed.
a. find the point estimate of the population mean.
b. construct the 95% confidence interval for the mean population length reading time and interpret it.
c. what is the margin of error?
d. how can we reduce the margin of error?
Answers: 2
Mathematics, 21.06.2019 17:00
Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .
Answers: 1
Mathematics, 21.06.2019 17:30
Which expressions are equivalent to k/2 choose 2 answers: a k-2 b 2/k c 1/2k d k/2 e k+k
Answers: 2
Apublisher wants to estimate the mean length of time (in minutes) all adults spend reading newspaper...
Mathematics, 04.07.2020 14:01
French, 04.07.2020 14:01
History, 04.07.2020 14:01
Mathematics, 04.07.2020 14:01
World Languages, 04.07.2020 14:01
Mathematics, 04.07.2020 14:01
Mathematics, 04.07.2020 14:01
Mathematics, 04.07.2020 14:01
English, 04.07.2020 14:01
Advanced Placement (AP), 04.07.2020 14:01