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researcher interested in estimating average salary of teachers. 95% confidence. Standard deviation $1050, how large a sample is needed to be accurate within $200 .
Statistics and Probability, Statistics
What type of data values are quantitative and the number of values is finite or countable?
Describe the steps you took. There are 652 males, 396 say they have been to dentist in past year. Give a confidence interval for 90% of the population proportion .
The STAT 200 course coordinator wants to estimate the proportion of all online STAT 200 students who attend Penn State Learning tutoring sessions. In a survey of 72 students during the Summer 2018 semester, 8 had attende ...
Rachel, age 65, has begun establishing many different trusts. Of the following beneficiaries listed in her trusts, who would be considered a skip person for purposes of the GSTT? I. Adam, age 25, her new husband II. Bart ...
According to a research? institution, the average hotel price in a certain year was ?$95.36. Assume the population standard deviation is ?$20.00 and that a random sample of 42 hotels was selected. a. Calculate the standa ...
With a die being rolled. The set of equally likely outcomes is? {1, 2? 3, 4? 5, 6}. Find the probability of getting a 10.
A media rental store rented the following number of movie titles in each of these catagories: 160 horrors, 242 drama, 114 mystery, 308 romance, and 134 comedy. If a person selects a movie to rent, find the probability th ...
We want to estimate the mean weight of all 7th grade boys in a city. It is not known whether the distribution of the weights is normal or not. Suppose we have a random sample of 64 boys from 7th grade from that city and ...
Consider random samples of size 800 from a population with proportion 0.60. (a) Find the mean and standard error of the distribution of sample proportions. Round your answer for the mean to two decimal places, and your ...
Let's pretend that in a hospital, 7% of patients are "high-risk" while the others are "lower-risk". For patients that are high-risk, 75% will be re-admitted within 30 days. For "lower-risk" patients, the 30day re-admitta ...
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