a normal distribution has a mean of 100 with standard deviation of 20. If one score is randomly selected from this distribution, what is the probability that the score will have a value between x=90...

a normal distribution has a mean of 100 with standard deviation of 20. If one score is randomly selected from this distribution, what is the probability that the score will have a value between x=90...

Which statistical test should I use to see if there is a difference in employment vs unemployment between two surveys one from May and one from June (with different respondents and different numbers...

I'm currently writing a statistics paper based on this study: http://www.environmentnewjersey.org/programs/nje/no-bees-no-food I need to find the explanatory variable, the response...

Are you more likely to make a Type I error when using a large sample or a small sample?

I solve the range which is 23

For the dinner special at a restaurant, the customer must choose an appetizer, an entree, a side dish, and a dessert. Here are the items to choose from. How many dinner specials are possible...

I need help with this question

which level of measurement is required for the mean?

A MEDICAL COMPANY TESTED A NEW DRUG FOR POSSIBLE SIDE EFFECTS THE TABLE SHOWS THE RELATIVE FREQUENCY THAT A STUDY PARTICIPANT EXPERIENCED THE SIDE EFFECT ...

I have no idea what I'm doing

Write the null and alternative hypotheses for the following example. Determine if it is a case of a two-tailed, a left-tailed, or a right-tailed test. To test whether the mean starting salary...

There are nine raincoats in size 6-8 on sale in the girl's department at Bloomingdale's. Three have tulips, four have bunnies, and two have hearts. Mack is in a rush and randomly chooses two raincoats...

X 4,2,5,1,3,5,3,7,3,5 Y 6,5,2,8,3,4,8,5,1,4 i did an f test and my f stat was 1.75 which was less than my F critical 3.18..stating close to equal variances. i have a p...

A) Skewedness B) Outliers C) Symmetry D) Centerness

Which county had the highest median income between 2006 to 2010? The answer is Los Angeles. I have a real data, how do I turn this question to a hypothesis and which test do I use?

The standard deviation for a population is σ=7.47. A random sample selected from this population gave a mean equal to 49.63. Construct a 95% confidence interval for μ assuming n=100. Round...

round to nearest thousandth

Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. When 332 college students are randomly selected and surveyed, it is...

Express the confidence interval -0.129 < p < 0.631 in the form of ± E.

I am auditing 30 charts for quality documentation. If for one specific question, only 2 of the 30 charts apply and 0/2 charts meet the requirements, is this statistically significant? Please...

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