Help 100 $ 14 2 Q 8 - Fri Mar Quiz3-Sp22.pdf Q age 2 of 2 Q Search in A quality control engineer wants to determine a proportion of defective parts that are coming off the assembly line. Past experiments based on large sample sizes show this proportion to be 0.08. What sample size does the engineer need in order to estimate this proportion with a margin of error of 0.01 with 95% confidence? Assuming normal distributions of calories, dieter estimates the difference of the average number of calories in a homemade peanut butter cookie (sample 1 - 10) as compared with a store-bought peanut butter cookie (sample "2 -8). The summary data for two samples are listed here: *= 180. 51 = 3.5: 2 = 179, and $2 - 4.2 Estimate the difference in the mean calories between the two types of cookies using a 95% confidence interval (round your answer to two decimal places). MacBook Pro F12Help CO 8 Fri Mar 3-Sp22.pdf O 1 of 2 Search + A state job service employee wishes to estimate the mean number of people who register with the service each week. How many weeks should be sampled in order to estimate the mean number of weekly registrants? The employee would like the margin of error to be less than 0.5 with probability of 0.95. Past records show the weekly standard deviation to be 2.5. weeks in A quality control engineer wants to determine a proportion of defective parts that are coming off the assembly line. Past experiments based on large sample sizes show this proportion to be 0.08. What sample size does the engineer need in order to estimate this proportion with a margin of error of 0.01 with 95% confidence?dow Help 00 Quiz3-Sp22.pdf A Q Search Page 2 of 2 listed here: X = 180. 51 = 3.5; 3 - 179, and 52 -4.2. Estimate the difference in the mean calories between the two types of cookies using a 95% confidence interval (round your answer to two decimal places) The sampling distribution of the quantity (n- 1)s / to make inferences about a single population variance is: a. an F distribution b. a chi-square distribution c. a normal distribution d. a t distribution e. none of these MacBook Proelp Q Fri Sp22.pdf 2 A Q Search BIOSTATISTICS (MTH-1210C), Spring 2022, P. Levin Quiz 3 (Ch. 6). Give explanations/Show your work in handwriting When two samples with size 30 each are selected at random from two populations with Binomial distributions, the sampling distribution of the difference between two sample means will be: Binomial with the variance being equal to the difference of population variances Binomial with the mean being smaller than the difference of population means Normal with the variance being equal to the difference of population variances Normal with the mean being equal to the difference of population means Normal with the mean being equal to the average of population means When constructing a confidence interval for a population mean, the population standard deviation & was 1. The obtained interval was 40.52 +1.24. If a was increased to 4, what would the confidence interval be? m Find the z-value needed to construct a 97.5% confidence interval estimate for the difference between two population proportions. MacBook Pro