Assume that the salaries of elementary school teachers in the United States are normally distributed with a mean of $34,000 and a standard deviation of $2000
assume the salaries of elementary school teachers in the United States normally distributed with a mean of 32,000 and a standard deviation of 3,000. If 100 teachers are randomly selected, find the probability that their mean salary is less than 32,000
Assume that the salaries of elementary school teachers in the United States are normally distributed with a mean of $32,000 and a standard deviation of $3000. If 100 teachers are randomly selected, find the probability that their mean salary is greater than $32,500.
Assume that the salaries of elementary school teachers in a particular country are normally distributed with a mean of $38,000 and a standard deviation of $4,000. What is the cutoff salary for teachers in the top 10%?
Salaries for teachers in a particular elementary school district are normally distributed with a mean of $44,000 and a standard deviation of $6,500. We randomly survey ten teachers from that district. Find the 90th percentile for an individual teacher’s salary. Find the 90th percentile for the average teacher’s salary.
Salaries for teachers in a particular elementary school district are normally distributed with a mean of $49,000 and a standard deviation of $4,400. We randomly survey ten teachers from that district. (Round your answers to the nearest dollar.) (a) Find the 90th percentile for an individual teacher's salary. (b) Find the 90th percentile for the average teacher's salary.
Salaries for teachers in a particular elementary school district are normally distributed with a mean of $44,000 and a standard deviation of $6,500. We randomly survey ten teachers from that district. (a). Find the 90th percentile for an individual teacher’s salary. (Round to the nearest whole number) (b) Find the 90th percentile for the average teacher’s salary. (Round to the nearest whole number)
Assume that the salaries of elementary school teachers in the unaired states have a mean of $32,000 and a standard deviation of $3000. if 100 teachers are randomly selected, would it be unusual to obtain a sample mean of 32450? answer by calculating the appropriate z-score.
OL Teacher Salaries A researcher claims that the mean of the salaries of elementary school teachers is greater than the mean of the salaries of secondary school teachers in a large school district. The mean of the salaries of a random sample of 27 elementary school teachers is $48,500, and the sample standard deviation is $3912.40. The mean of the salaries of a random sample of 25 secondary school teachers is $45,400. The sample standard deviation is $5533. At a=0.10,...
Salaries for teachers in a particular elementary school district are normally distributed with a mean of $47,000 and a standard deviation of $6,900. We randomly survey ten teachers from that district. (Round your answers to the nearest dollar.) (a) Find the 90th percentile for an individual teacher's salary. $ 55843 (b) Find the 90th percentile for the average teacher's salary. If you can show me how to break this down on a TI-84, that would be great. I don't have...
Data on salaries in the public school system are published annually by a teachers' association. The mean annual salary of public) classroom teachers is 557.7 thousand. Assume a standard deviation of $8.4 thousand. Complete parts (a) through (e) below a. Determine the sampling distribution of the sample mean for samples of size 64. The mean of the sample mean is Hy = $(Type an integer or a decimal. Do not round.) The standard deviation of the sample mean is =$(Type...