### InstructionsAn IQ test is designed with a mean of 100 and a standard deviation of 12 for the population of normal adults. Your task is to find the sample size necessary to estimate the mean IQ score of statistics students such that it can be stated with 90% confidence that the sample mean is within 2 IQ points of the true mean. Assume that the population standard deviation (σ) is 12. Use technology to determine the required sample size, and evaluate if this sample size is reasonable for a real-world calculation.---### Question**The required sample size is:** (Round up to the nearest integer.)---**Would it be reasonable to sample this number of students?**- ○ Yes. This number of IQ test scores is a fairly large number.- ○ No. This number of IQ test scores is a fairly small number.- ○ No. This number of IQ test scores is a fairly large number.- ○ Yes. This number of IQ test scores is a fairly small number.

Answer Given,The confidence interval = 90%The margin of error [E] = 2The mean = 100The standard…

Answered: An IQ test is designed so that the mean…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

A point estimate consists of a single sample that is used to estimate the true population parameter. is a method of using samples to estimate population parameters.
Assume the samples are random and independent, the populations are nomally distributed, and the population variances are equal. The table available below shows the prices (in dollars) for a sample of automobile batteries. The prices are classified according to battery type. At a = 0.10, is there enough evidence conclude that at least one mean battery price is different from the others? Complete parts (a) through (e) below. E Click the icon to view the battery cost data. (a) Let u1. P2. H3 represent the mean prices for the group size 35, 65, and 24/24F respectively. Identify the claim and state Ho and H. H Cost of batteries by type The claim is the V hypothesis. Group size 35 Group size 65 Group size 24/24F 101 111 121 124 D 146 173 182 278 124 140 141 89 (b) Find the critical value, Fo, and identify the rejection region. 90 79 84 The rejection region is F Fo, where Fo = (Round to two decimal places as needed.) (c) Find the test statistic F. Print Done F= (Round to two decimal places as…
Use the data on student load. to test the claim that mean student load is more than 6.5 units. Use α = 0.10. Assume all requirements have been met. Student Unit Load 3, 12, 6, 9, 6, 12, 15, 12, 7, 9, 3 Test the claim that mean student load is more than 6.5 units. Use α = 0.10. Assume all requirements have been met.
In most cases of study, the statistical analysis is not giving the precise value of measurement but only giving the best estimation value of the precise value. Why is it so?
A survey was developed to estimate the average number of hours per week that adults spend exercising. Every third person entering a large fitness complex was surveyed, with a total of 2,500 people being surveyed. The data showed that the mean number of hours spent exercising was 3.2 hours per week. Which characteristic of the survey could create a bias in the results? The size of the sample The size of the sample The method of analyzing the data The method of analyzing the data The method of choosing the people who were surveyed The method of choosing the people who were surveyed The size of the population
The Chancellor wants you to calculate the sample size needed with a margin of error of 15, 99% confidence, and a population standard deviation of 22.
If you want to construct a 90% confident interval for a population mean such that it is within a quarter (population) standard deviation from the sample mean, then what is the minimum sample size required?
You would like to make an interval estimate of a population mean from a sample of size 25. Assume the population standard deviation is 6. Assuming 98% Confidence, what is the margin for error for the estimate.
Calculate the standard score (z-score) of the given sample mean. Round your answer to two decimal places. mu=57" and "sigma=14;n=38; bar(x)=62

Recommended textbooks for you

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

SEE MORE TEXTBOOKS