20. The major test of readiness for college is the SAT. The test is approximately normally distributed. The SAT ranges from 400 to 1600, with a mean of 1026 and a standard deviation of 209. a. Copy the graph below and fill in the SAT scores and percentages corresponding to the Empirical (68-95-99.7%) rule. Use the figure to ESTIMATE the proportion of students who according to the Empirical (68-95- 99.7%) rule score b. Above 1653. C. Below 608. d. Between 1026 and 1444.
20. The major test of readiness for college is the SAT. The test is approximately normally distributed. The SAT ranges from 400 to 1600, with a mean of 1026 and a standard deviation of 209. a. Copy the graph below and fill in the SAT scores and percentages corresponding to the Empirical (68-95-99.7%) rule. Use the figure to ESTIMATE the proportion of students who according to the Empirical (68-95- 99.7%) rule score b. Above 1653. C. Below 608. d. Between 1026 and 1444.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 3CYU
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Question
20 and 21 please <3
Transcribed Image Text:Find the probability the sample contains no broken parts.
b. Find the probability that the sample contains exactly 1 broken part.
a.
20. The major test of readiness for college is the SAT. The test is approximately normally distributed.
The SAT ranges from 400 to 1600, with a mean of 1026 and a standard deviation of 209.
a. Copy the graph below and fill in the SAT scores and percentages corresponding to the Empirical
(68-95-99.7%) rule.
Use the figure to ESTIMATE the proportion of students who according to the Empirical (68-95-
99.7%) rule score
b. Above 1653.
C.
Below 608.
d. Between 1026 and 1444.
21. In a HuffPost Style and YouGov poll, 1000 US adults were asked about their online vs. in store
clothes shopping. One finding was that 32% of respondents never clothes-shop online.
a.
What is the sample size n?
b. What is u, the mean of the sample proportion p?
C.
What is on, the standard deviation of the sample proportion p?
d. What is the probability that the percentage of respondents who never shop online is below
33.3%?
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