945 Answered Questions for the topic Statistics Question

Statistics Question Statistics

10/06/15

Statistics questions
What is an example of data that clearly would not fall under a normal curve. 
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Statistics Question Statistics

10/06/15

Stat question help.
if a can of pop has a mean of 12.oz ounces and a standard deviation of 0.11 what is the probability that your coke can have more than 12.00 ounces
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Statistics Question

10/03/15

P(x>38)= round to the four decimal place
P(x>38)= round to the four decimal place-   assume the random variable x is normally distrubuted with mean u=5 and standard deviation 0=7, compute the probabilty
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Statistics Question

10/01/15

9) The Australian sheep dog is a breed renowned for its intelligence and work ethic. It is estimated that 40% of adult Australian sheep dogs weigh 65 pounds or
9) The Australian sheep dog is a breed renowned for its intelligence and work ethic. It is estimated that 40% of adult Australian sheep dogs weigh 65 pounds or more. A sample of 12 adult dogs is... more
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Statistics Question

10/01/15

A tablet PC contains 8152 music and video files. The distribution of file size is highly skewed.
Assume that the standard deviation for this population is 0.84 megabytes (MB). Suppose that the true mean file size of the music and video files on the tablet is 7.6 MB and you plan to take an SRS... more
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Statistics Question

09/30/15

statistics word problem
A student participated in one game in each of two rounds. 6 of 32 games were lost by his team during the first round. 5 of 32 games were lost by his team during the second round. What are the odds... more
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Statistics Question

09/29/15

Statistic question
Given the following data:222-233-254-241-251-268-276-220-238-253-249-236-247-256-261-227-257-244-239-242a) Construct a frequency distribution using 6 classes.b) Construct a relative frequency... more
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Statistics Question

09/28/15

In a survey of 7000 women 4431 say they change their nail polish once a week. Construct a 90% confidence interval for the population proportion of women who cha
in a survey of 7000 women 4431 say they change their nail polish once a week. Construct a 90%  interval for the population proportion of women who change their nail polish once a week.
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Statistics Question

09/25/15

statistics word problem help
One of Umbrella Corporation's manufacturing plants makes two independent products, X and Y. The cost to make X is $ 0.7 per unit and the cost to make Y is $ 0.1 per unit. There is a monthly fixed... more
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Statistics Question

09/23/15

What would cause the mean to be less than the median
What would cause the mean to be less than the median, and under what conditions would the mean and the median be close to one another?
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Statistics Question

09/21/15

Statistics problem
I'm having a lot of trouble with this problem   Listed below are the duration (in hours) of a simple random sample all flights of a space shuttle program. Find the range, variance, and standard... more
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Statistics Question

09/21/15

Statistics problem
Refer to the data set of times, in minutes, required for an airplane to taxi out for takeoff, listed below.   47, 50, 46, 28, 48, 34, 46, 45, 17, 45, 16, 1614, 23, 27, 50, 46, 12, 27, 22, 13, 48,... more
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Statistics Question

09/19/15

On a TV game show, a contestant is shown 8 products from a grocery store and is asked to choose the three least-expensive items in the set, and then correctly a
On a TV game show, a contestant is shown 8 products from a grocery store and is asked to choose the three least-expensive items in the set, and then correctly arrange these three items in order of... more
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Statistics Question

09/19/15

On a TV game show, a contestant is shown 8 products from a grocery store and is asked to choose the three least-expensive items in the set. The three chosen ite
On a TV game show, a contestant is shown 8 products from a grocery store and is asked to choose the three least-expensive items in the set. The three chosen items need not be in any particular... more
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Statistics Question

09/19/15

An investor is considering a $25,000 investment in a start-up company. She estimates that she has probability 0.05 of a $20,000 loss, probability 0.2 of a $20,0
An investor is considering a $25,000 investment in a start-up company. She estimates that she has probability 0.05 of a $20,000 loss, probability 0.2 of a $20,000 profit, probability 0.15 of a... more
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Statistics Question

09/19/15

Probabilities
When company X ships a dozen eggs, there is a 3% chance that exactly one egg will be broken, a 0.5% chance that the whole dozen will be broken, but no chance that any other number of eggs will be... more
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Statistics Question

09/18/15

Statistcs help
Below are 36 sorted ages of an acting award winner. Find the percentile corresponding to age 37 using the method presented in the textbook.18 19 19 20 21 23 26 27 29 30 30 30 33 34 35 35 37 39 40... more
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Statistics Question

09/18/15

Statistcs help
With a height of 63 in, Johnson was the shortest president of a particular club in the past century. The club presidents of the past century have a mean height of 66.5 in and a standard deviation... more
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Statistics Question

09/18/15

Statistcs help
I don’t know I don’t know if the statistics is done on this site however here is my problem and I don’t not have answered this. My booklet says Listed below are the errors between the predicted... more
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Statistics Question

09/17/15

When, if ever, should a researcher use a one-tailed p-value for alpha?
Would researchers use a one-tailed p-value for alpha, if so when?
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Statistics Question Statistics Statistics Method

09/15/15

How do you figure out if coefficients are statistically significant at a certain level?
I have a table with regression statistics, cofficients, SE, t-stat, p-value, lower 85% and upper 95%.   I'm not even sure where to start.   1. I need to find statistical significance at 10% 2.... more
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Statistics Question

09/14/15

Determine whether H0 should be rejected
Suppose we have a multinomial population with four categories:A, B, C, and D. The null hypothesis is that the proportion of items is the same in every category. A sample size of 300 yields the... more
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Statistics Question

09/11/15

I need help with this stats question without using technology like Minitab to get the answer
The presence of harmful insects in farm fields is detected by erecting boards covered with a sticky substance and then examining the insects trapped on the board. To investigate which colors are... more
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Statistics Question

09/07/15

quantitative vs qualitative
What are the quantitative and qualitative variables in this study. You are conducting a study of students doing work- study jobs on campus, and you create a survey to gather data.Among the... more
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Statistics Question

09/03/15

Find the z-score and interpret it
1. Find the z-score of the value 139 in a dataset with mean 111 and standard deviation 8. Interpret the z-score in terms of number of standard deviations above or below the mean.z-score=? The... more
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