Question

Asked Apr 9, 2019

3 views

Q4. You conduct a poll comparing two candidates. In a poll of 400 people, 190 prefer candidate A, and 210 prefer B.

Q4e. If you want to shrink one stdev error to 1%, how many people do you need to survey?

Step 1

In this question we are taking the sample of 400, out of which 190 prefers A and 210 prefers B.

This is a ...

Tagged in

Q: Suppose that from the past experience a professor knows that the test score of a student taking his ...

A: If a random variable X has a distribution with mean µ and standard deviation σ, then the Z-score is ...

Q: Select the statistic test that best fits each description. Study examining how much of the variation...

A: Regression:Regression analysis explains whether two variables are related or not and correlation exp...

Q: The scores on a test are normally distributed with a mean of 150 and a standard deviation of 30. Fin...

A: The normal distribution:A continuous random variable X is said to follow normal distribution if the ...

Q: Monica, still, takes one hour to wash a car and Bill takes two hours to wash a car. If they work to...

A: Let Monica and Bill can complete the work in x hours if they work together.Washing a car can be deno...

Q: A genetic experiment involving peas yielded one sample of offspring consisting of 430 green peas and...

A: State the appropriate hypothesis:Let p be the population proportion of yellow offspring peas.The giv...

Q: Do you have a great deal of confidence in the advice given to you by your medical doctor? About 35% ...

A: According to the provided information, sample size (n) = 37 and the population proportion of people ...

Q: Suppose that Xi ∼ Gamma(αi , β) independently for i = 1, . . . , N. The mgf(moment generating functi...

A: It is provided that and the moment generating function (MGF) is,

Q: I am working on constructing a histogram for some data for the 39 US national parks under 900,000 ac...

A: According to the given data41 ,66 ,233 ,775 ,169, 36 ,338 ,233 ,236, 64,183 ,61 ,13 ,308 ,77,520, 77...

Q: Select the statistic test that best fits each description. Comparison of mean reading test scores by...

A: Introduction to one-way ANOVA:One-way ANOVA is a statistical method for testing hypotheses regarding...