You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based on previous study, you believe the population standard deviation is approximately σ=40.9σ=40.9 dollars. You would like to be 90% confident that your estimate is within 1.5 dollar(s) of average spending on the birthday parties. How many parents do you have to sample? n=

The standard deviation for the​ high-temperature group is _________ the standard deviation for the​ low-temperature group.​ Therefore, an increase in temperature_______________variability in tensile strength.options for first is greater than, smaller than, similar to options for second blank is does not influence or influences

You want to obtain a sample to estimate a population mean age of the incoming fall term transfer students. Based on previous evidence, you believe the population standard deviation is approximately σ = 5.4. You would like to be 99% confident that your estimate is within 1.8 of the true population mean. How large of a sample size is required? n = Do not round between steps. Use technology to find z-score. Give your answer in whole people. Make sure you use the correct rounding rule for samples size.

plz solve it within 30-40 mins I'll give you multiple upvote

I need help solving

I need help solving

z Scores LeBron James, one of the most successful basketball players of all time, has a height of 6 feet 8 inches, or 203 cm. Based on statistics from Data Set 1 “Body Data” in Appendix B, his height converts to the z score of 4.07. How many standard deviations is his height above the mean?

Reading Improvement Program To help students improve their reading, a school district decides to implement a reading program. It is to be administered to the bottom 15% of the students in the district, based on the scores on a reading achievement exam. If the average score for the students in the district is 117.0 , find the cutoff score that will make a student eligible for the program. The standard deviation is 21. Assume the variable is normally distributed. Round z-value calculations to 2 decimal places and the final answer to the nearest whole number. Cutoff score= X S

previous study, you believe the population standard deviation is approximately σ=31.6σ=31.6 dollars. You would like to be 99% confident that your estimate is within 5 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?     n =