Use Slovin's Formula to compute for the value of n (number of samples) needed if the percentage of error is set at 5%. Then compute for the number of samples needed in each Grade Level using Stratified Proportional Sampling. Show your complete solution.

You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estimation for the population proportion. You would like to be 90% confident that you estimate is within 3.5% of the true population proportion. How large of a sample size is required?

You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estimation for the population proportion. You would like to be 90% confident that you estimate is within 4% of the true population proportion. How large of a sample size is required?

You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estimation for the population proportion. You would like to be 99% confident that you estimate is within 3% of the true population proportion. How large of a sample size is required?

Wildlife biologist inspects 153 deer taken by hunters and find 32 of them carrying Lyme disease ticks. 1). If the scientist want to estimate the proportion of the deer that carry Lyme disease ticks within 2% with 90% confidence how many deer should they sample?

Let's assume that your friend is transferring to a four-year institution with a 3.6 GPA and 60 credit hours. During the first year at the new college, your friend takes 30 credits and earns a 2.8 GPA. Use the following processes to help your friend determine their overall GPA (combining the community college and four-year university credits). First, follow the steps below to use the weighted average method to find your friend's combined GPA. Part A: How many total points were earned at the community college? 216 Part B: How many total points were earned at the four-year institution? 84 o points 300 Part C: How many total points were earned at the two institutions? ✓opoints. 90 o points Part D: What is the total number of credit hours successfully completed at the two institutions? o total credit hours.

Do teachers find their work rewarding and satisfying? An article reports the results of a survey of 398 elementary school teachers and 267 high school teachers. Of the elementary school teachers, 222 said they were very satisfied with their jobs, whereas 128 of the high school teachers were very satisfied with their work. Estimate the difference between the proportion of all elementary school teachers who are satisfied and all high school teachers who are satisfied by calculating a 95% CI. (Use pelementary − phigh school. Round your answers to four decimal places.)        ,      Interpret your 95% confidence interval. We are 95% confident that the difference between the proportions of elementary school teachers who are satisfied and high school teachers who are satisfied falls above the upper bound.We are 95% confident that the difference between the proportions of elementary school teachers who are satisfied and high school teachers who are satisfied falls below the…

Do teachers find their work rewarding and satisfying? An article reports the results of a survey of 396 elementary school teachers and 264 high school teachers. Of the elementary school teachers, 229 said they were very satisfied with their jobs, whereas 129 of the high school teachers were very satisfied with their work. Estimate the difference between the proportion of all elementary school teachers who are satisfied and all high school teachers who are satisfied by calculating a 95% CI. (Use Pelementary Phigh school. Round your answers to four decimal places.) USE SALT