Purchase Solution

Multiple choice questions

Not what you're looking for?

Ask Custom Question

1) IF the sampled population has a mean 48 and standard deviation 16, then the mean and the standard deviation for the sampling distribution of x-bar for n=16 are:
2) Consider two population distributions labeled A and B. Distribution A is highly skewed and non-normal, while the distribution B is slightly skewed and near normal. In order for the sampling distributions of A and B to achieve the same degree of normality:
Choices:
Population A will require a larger sample size
Population B will require a larger sample size
Population A and B will require the same sample size.

3) A manufacturing company measures the weight of boxes before shipping them to the customers. If the box weights have a population mean and standard deviation of 90 lbs and 24 lbs respectively, then based on a sample size of 36 boxes, the probability that the average weight of the boxes will exceed 94 lbs. is:
Choices
34.13%
84.13%
15.87%
56.36%
16.87%

4) The population of all sample proportions has a normal distribution if the sample size is sufficiently large. The rule of thumb for ensuring that is sufficiently large is:
Np>5
N(1-p)>5
Bo</5
N(1-p)</.5 and np</5
Np>/5 and n(1-P)>/5

5) The t distribution approaches the ______ as the sample size ________.
Choices:
Binomial, increases
Binomial, decreases
Z, decreases
Z, increases

Purchase this Solution

Solution Summary

Answers to Multiple choice questions on sample means, standard deviation, sample size, normal distribution, t distribution

Solution Preview

1) IF the sampled population has a mean 48 and standard deviation 16, then the mean and the standard deviation for the sampling distribution of x-bar for n=16 are:

Mean= 48
Standard deviation of sampling distribution of mean= standard deviation / sauare root of sample size
= 16 / square root of 16 = 16/4 = 4

2) Consider two population distributions labeled A and B. Distribution A is highly skewed and non-normal, while the distribution B is slightly skewed and near normal. In order for the sampling distributions of A and B to achieve the same degree of normality:
Choices:
Population A will require a larger sample size
Population B will require a larger sample size
Population A and B will require the same ...

Purchase this Solution


Free BrainMass Quizzes
Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.