The reading speed of second grade students in a large city is approximately normal, with a mean of 88 words per minute (wpm) and a standard deviation of 10 wpm.Complete parts (a) through (f).Click here to view the standard normal distribution table (page 1).Click here to view the standard normal distribution table (page 2).D. Increasing the sample size decreases the probability because o, decreases as n increases.(e) A teacher instituted a new reading program at school. After 10 weeks in the program, it was found that the mean reading speed of a random sample of 22 secondgrade students was 90.2 wpm. What might you conclude based on this result? Select the correct choice below and fill in the answer boxes within your choice.(Type integers or decimals rounded to four decimal places as needed.)A. Amean reading rate of 90.2 wpm is not unusual since the probability of obtaining a result of 90.2 wpm or more is 0.1515 This means that we wouldexpect a mean reading rate of 90.2 or higher from a population whose mean reading rate is 88 in 23 of every00 random samples of size n = 22 students.The new program is not abundantly more effective than the old program.B. Amean reading rate of 90.2 wpm is unusual since the probability of obtaining a result of 90.2 wpm or more isreading rate of 90.2 or higher from a population whose mean reading rate is 88 inprogram is abundantly more effective than the old program.This means that we would expect a meanof every 100 random samples of size n =22 students. The newClick to select and enter your answer(S) and then click Check Answer

As the sample size increases, probability decreases. It is given that the reading speed of second…

The reading speed of second grade students in a large city is approximately normal, with a mean of 88 words per minute (wpm) and a standard deviation of 10 wpm. Complete parts (a) through (f). Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). D. Increasing the sample size decreases the probability because o decreases as n increases. (e) A teacher instituted a new reading program at school. After 10 weeks in the program, it was found that the mean reading speed of a random sample of 22 second grade students was 90.2 wpnm. What might you conclude based on this result? Select the correct choice below and fill in the answer boxes within your choice. (Type integers or decimals rounded to four decimal places as needed.) O A. Amean reading rate of 90.2 wpm is not unusual since the probability of obtaining a result of 90.2 wpm or more is 0.1515. This means that we would expect a mean reading rate of 90.2 or higher from a population whose mean reading rate is 88 in 23 of ever00 random samples of size n= 22 students. The new program is not abundantly more effective than the old program. O B. Amean reading rate of 90.2 wpm is unusual since the probability of obtaining a result of 90.2 wpm or more is reading rate of 90.2 or higher from a population whose mean reading rate is 88 in program is abundantly more effective than the old program. This means that we would expect a mean of every 100 random samples of size n = 22 students. The new

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA