Suppose x has a distribution with ? = 78 and ? = 8.   Find P(74 ≤ x ≤ 79). (Round your answer to four decimal places.)

MATLAB: An Introduction with Applications
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Suppose x has a distribution with ? = 78 and ? = 8.
 
Find P(74 ≤ x ≤ 79). (Round your answer to four decimal places.)
Suppose x has a distribution with u = 78 and o = 8.
In USE SALT
(a) If random samples of size n = 16 are selected, can we say anything about the x distribution of sample means?
Yes, the x distribution is normal with mean u= 78 and o = 2.
Yes, the x distribution is normal with mean u ;= 78 and o = 0.5.
Yes, the x distribution is normal with mean u= 78 and o = 8.
© No, the sample size is too small.
(b) If the original x distribution is normal, can we say anything about the x distribution of random samples of size 16?
Yes, the x distribution is normal with mean u- = 78 and o; = 2.
Yes, the x distribution is normal with mean u- = 78 and o;= 0.5.
O Yes, the x distribution is normal with mean u-- 78 and o= 8.
O No, the sample size is too small.
Find P(74 s x s 79). (Round your answer to four decimal places.)
0.2412
Transcribed Image Text:Suppose x has a distribution with u = 78 and o = 8. In USE SALT (a) If random samples of size n = 16 are selected, can we say anything about the x distribution of sample means? Yes, the x distribution is normal with mean u= 78 and o = 2. Yes, the x distribution is normal with mean u ;= 78 and o = 0.5. Yes, the x distribution is normal with mean u= 78 and o = 8. © No, the sample size is too small. (b) If the original x distribution is normal, can we say anything about the x distribution of random samples of size 16? Yes, the x distribution is normal with mean u- = 78 and o; = 2. Yes, the x distribution is normal with mean u- = 78 and o;= 0.5. O Yes, the x distribution is normal with mean u-- 78 and o= 8. O No, the sample size is too small. Find P(74 s x s 79). (Round your answer to four decimal places.) 0.2412
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