Please Use R studio to answer the question. This is the Statistics section of Comparing Groups....

Please Use R studio to answer the question. This is the Statistics section of Comparing Groups.

One month before the election, a poll of 630 randomly selected votes showed 54% planning to vote for a certain candidate. A week later, it became known that he had had an extramarital affair, and a new poll showed only 51% of 1010 voters supporting him. Do these results indicate a decrease in voter support fo his candidacy?

a) Test an appropriate hypothesis as state your conclusion.

b) If you concluded there was a difference, estimate that difference with a confidence interval and interpret your interval in context.

Expert Solution

Let denote the proportion voters supporting him before and after respectively.

a)

There is not sufficient evidence to support the claim that there is a decrease in voter support fo his candidacy.

b)

With 95% confidence, it can be concluded that true difference in proportions will lie between (-0.012, 0.072) .

orchestra answered 1 year ago

Please Use R studio and show all the steps to answer this question NY Marathon 2013...

Please Use R studio and show all the steps to answer this question NY Marathon 2013 the table below shows the winning times (in minutes) for men and women in the new york city marathon between 1978 and 2013. (the race was not run in 2012 because of superstorm sandy.) assuming that performances in the big apple resemble performances elsewhere, we can think of these data as a sample of performance in marathon competitions. Create a 90% confidence interval for...

Please Use R studio to answer this question NY Marathon 2013 the table below shows the...

Please Use R studio to answer this question NY Marathon 2013 the table below shows the winning times (in minutes) for men and women in the new york city marathon between 1978 and 2013. (the race was not run in 2012 because of superstorm sandy.) assuming that performances in the big apple resemble performances elsewhere, we can think of these data as a sample of performance in marathon competitions. Create a 90% confidence interval for the mean difference in winning...

Can You please Answer the question using R studio and R cloud Telomeres are complexes of...

Can You please Answer the question using R studio and R cloud Telomeres are complexes of DNA and protein that cap chromosomal ends. They consist of the same short DNA sequence TTAGGG repeated over and over again. They tend to shorted with cell divisions and with advancing cellular age, which will lead to chromosome instability or apoptosis (programmed cell death). Eukaryotic cells have the ability to reverse telomere shortening by expressing telomerase, an enzyme that extends the telomeres of chromosomes....

Please use R studio, Thank you. 2. The probability of a student passing statistics is known...

Please use R studio, Thank you. 2. The probability of a student passing statistics is known to be 0.41; and the probability of a student passing chemistry is known to be 0.55. If the probability of passing both is known to be 0.35, calculate: (a) the probability of passing at least one of statistics and chemistry (b) the probability of a student passing chemistry, given that they passed statistics (c) Are passing chemistry and statistics independent? Justify (d) (harder) a...

Please use R-Studio to answer the following question. I mentioned that dnorm(x, mean, sd) doesn’t give...

Please use R-Studio to answer the following question. I mentioned that dnorm(x, mean, sd) doesn’t give the probability of being exactly equal to x. So what does it give? It gives you the height of the normal curve at that x. Plot the graph of a normal random variable with mean 50 and standard deviation 10. Note you will have to create range of xvalues between 0 to 100. Then find the probability using dnorm() then use plot() command

THIS QUESTION REQUIRES THE USE OF R STUDIO. ANY ANSWERS GIVEN THAT ARE NOT IN R...

THIS QUESTION REQUIRES THE USE OF R STUDIO. ANY ANSWERS GIVEN THAT ARE NOT IN R STUDIO CODE WILL NOT SUFFICE. SOLVING WITHOUT THE USE OF R STUDIO IS NOT ACCEPTABLE. The previous question was: Annual salaries for a large company are approximately normally distributed with a mean of 49000 dollars and a standard deviation of 2000 dollars. One manager claims that all of his direct reports are paid "above the 75th percentile" for the company. What is the minimum...

Using R Studio/R programming... Usually, we will use a random sample to estimate the statistics of...

Using R Studio/R programming... Usually, we will use a random sample to estimate the statistics of the underlying population. If we assume a given population is a standard normal distribution and we want to estimate its mean, which is the better technique to estimate that mean from a sample: Use the mean of one random sample of size 500 Use the mean of 300 random samples of size 10 Run your own experiment and use your results as a supporting...

please use R studio to answer the following questions 1. An eductional theorist collects behavioural data...

please use R studio to answer the following questions 1. An eductional theorist collects behavioural data from two groups of children in an early childhood center. She measures how much time the children are active (e.g. running or swinging on the monkey bars) in minutes. The first group of children are encouraged to run about and as such are expected to be active; the second group is encouraged to sit still and paint, and are expected to be less active....

Please use R and R studio A sample of 15 female collegiate golfers was selected and...

Please use R and R studio A sample of 15 female collegiate golfers was selected and the clubhead velocity (km/hr) while swinging a driver was determined for each one, resulting in the following data (“Hip Rotational Velocities During the Full Golf Swing,” J.of Sports Science and Medicine, 2009: 296–299): 69.0 69.7 72.7 80.3 81.0 85.0 86.0 86.3 86.7 87.7 89.3 90.7 91.0 92.5 93.0 The corresponding z percentiles are -1.83 -1.28 -0.97 -0.73 -0.52 -0.34 -0.17 0.0 0.17 0.34 0.52...

Please use this paper to answer both the sub section question in detail please. this paper...

Please use this paper to answer both the sub section question in detail please. this paper is avialbale online so thier is no plagirism http://genesdev.cshlp.org/content/9/7/783.full.pdf Q. It is mentioned that embryos produced by the cactSu/ cactSu females are fully viable, yet when injected with the cactΔPEST mRNA, they become dorsalized, sometimes quite strongly (Fig. 6B). Propose why this dorsalization would happen in these injected embryos.

Question