Calculus and Above

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A 0.05 significance level is used for a hypothesis test of

A 0.05 significance level is used for a hypothesis test of the claim that when parents use a particular method of gender selection, the proportion of baby girls is less than 0.5. Assume that sample d… read more

I need some help with my economic statistics homework! I am

Hi I need some help with my economic statistics homework! I am very confused.1. The mean income per person in the United States is $38,500, and the distribution of incomes follows a normal distributio… read more

There will be a series of 10 to 20 questions: Instructions:

There will be a series of 10 to 20 questions: Instructions: Statistical Application assessment #3 is a bit different. Rather than asking you to perform certain computational exercises it asks you to d… read more

1. Identify the null hypothesis H0 and the alternative

1. Identify the null hypothesis H0 and the alternative hypothesis H1. Use p for a claim about a proportion. A skeptical paranormal researcher claims that the proportion of Americans that have seen a U… read more

Given below are the analysis of variance results from a

Given below are the analysis of variance results from a Minitab display. Assume that you want to use a 0.05 significance level in testing the null hypothesis that the different samples come from popul… read more

When 196 workers aged 18-25 were asked how many hours they

When 196 workers aged 18-25 were asked how many hours they worked in the previous week, the mean was 37.8 with a standard deviation of 13.4. Does this suggest that the population mean work week for th… read more

Identify the null hypothesis Ho & the alternative hypothesis H1

Identify the null hypothesis Ho and the alternative hypothesis H1. A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO, p, is less than 1 in every one thousa… read more

Test a research hypothesis that data (Sample) that was drawn

Test a research hypothesis that data (Sample) that was drawn from this same area (Population) is different in its lead contamination, and is therefore not representative. Use a Z-test at the 0.05 leve… read more

A researcher believes that certain types of doctors are happier

A researcher believes that certain types of doctors are happier than other doctors. One theory is that certification level is an important factor their overall sense of happiness. To investigate this,… read more

Bentley Foods, Inc, has agreed to a new line of frozen pizza

Bentley Foods, Inc, has agreed to a new line of frozen pizza provided that at least 15% of the population would prefer the pizza over other frozen pizzas currently available. To determine the preferen… read more

a bank conducts a survey in which it randomly samples 400 of

a bank conducts a survey in which it randomly samples 400 of its customers. The survey asks the customers which way they use the bank the most: (1) interacting with a teller at the bank, 2) using ATM'… read more

For Ryan, I have another set of questions 1) For a two-tailed

For Ryan, I have another set of questions 1) For a two-tailed test with a sample size of 40, the null hypothesis will not be rejected at a 5% level of significance if the test statistic is? A)greater … read more

Here is the question: If we are trying to find the significance

Here is the question: If we are trying to find the significance of the difference between the means of two independent samples (male and female), what would be the best statistical test to use and wha… read more

2. Imagine a lead study that shows elevated soil contamination

2. Imagine a lead study that shows elevated soil contamination in neighborhoods near a highway (historical source of lead is gasoline additive). Test a research hypothesis that data (Sample) that was … read more

I have information regarding the educational level in a certain

I have information regarding the educational level in a certain area. I have the actual population and percentage numbers for each level of education. How do I calculate the average level of education… read more

Examine the given statement, then express the null hypothesis

Examine the given statement, then express the null hypothesis Ho. and the alternative hypothesis H1 in symbolic form. Highschool teachers have incomes with a standard deviation that is more than $22,2… read more

FOR SCOTT: http://www.sendspace.com/file/sm4o0j The null

FOR SCOTT: http://www.sendspace.com/file/sm4o0j The null hypothesis: The alternative hypothesis: The type of test statistic: z,t,chi square, F The value of the test statistic (round to 3): The two cri… read more

What kind of statistical test do I need to run to determine

What kind of statistical test do I need to run to determine difference in levels of anxiety related to interpretation and asking for help? This question is based on a survey students were given regard… read more

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