find the indicated IQ score the graph to the right to the IQ scores of adults an

Question

find the indicated IQ score the graph to the right to the IQ scores of adults and those scores are normally distributed with a mean of 100 and a standard deviation of 15.

the indicated IQ score is round 10 whole number as needed please.

x=0.1026

Express confidence interval 0.039 < 0.479 in the form p+ e.   

A. 0.22 + 0.5

B. 0.259 + 0.22

c. 0.259 + 0.5

d. 0.259 + 0.44

assume that adults have IQ scores are normally distributed with a mean of u equals 100 and standard deviation equals 15 find the probability that a randomly-selected adult has an IQ less than 118

the probability that a randomly-selected adult has an iq less than 118 is? type in answers your or decimal rounded to 4 then needed

Explanation / Answer

1. P(Score > X) = 0.1026

or, P(Z > (X-100)/15) = 0.1026

We know, P(Z>1.267) = 0.1026

Hence, (X-100) / 15 = 1.267

So, X = 119

2. Confidence interval (0.039 , 0.479) shows that mean = (0.039+0.479)/2 = 0.259 and error = 0.259-0.039 = 0.22

So, Answer: b. 0.259 + 0.22

3. P(X < 118)

= P(Z<(118-100)/15 ) = P(Z<1.2) = 0.8849

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.