Determine the probability P(3) for a binomial experiment with n=8 trials and the success probability p=0.3. Then find the mean, variance, and standard deviation. Part 1 of 3 Determine the probability P (3). Round the answer to at least three decimal places. P(3) =O Part 2 of 3 Find the mean. If necessary, round the answer to two decimal places. The mean is Part 3 of 3 Find the variance and standard deviation. If necessary, round the variance to two decimal places and standard deviation to at least three decimal places. The variance is The standard deviation is

What are the Excel mean and standard deviation of the GPA data?     Which process is appropriate? ________ Use Excel and the information from parts 4a and 4b to calculate the probability that a randomly selected MSU student has a GPA between 2.95 and 3.7.  GPA Max 3.9     Min 1.5     Classes 6     Class width 0.4     LCL UCL MP Frequency 1.5 1.9 1.7 5 1.9 2.3 2.1 5 2.3 2.7 2.5 5 2.7 3.1 2.9 5 3.1 3.5 3.3 5 3.5 3.9 3.7 5

Use the magnitudes​ (Richter scale) of the 120 earthquakes listed in the accompanying data table. Use technology to find the​ range, variance, and standard deviation. If another​ value, 8.00, is added to those listed in the data​ set, do the measures of variation change much? 3.272.452.542.432.752.372.192.421.911.432.851.731.992.322.332.704.742.873.382.722.833.423.952.993.873.473.082.942.703.602.842.373.033.232.593.643.242.662.352.432.813.952.522.922.983.412.272.562.933.162.201.151.934.002.542.832.352.311.522.801.951.602.452.332.081.553.201.491.812.551.662.352.452.082.192.752.002.792.392.671.692.881.841.991.862.561.972.183.671.553.162.461.881.502.793.283.822.752.452.712.541.642.183.032.361.481.922.322.651.411.391.802.242.302.481.732.402.442.482.44

A developmental psychologist is interested in studying how long babies gaze at a photograph of a human face. To test this question, she shows a picture to a sample of six babies and records the length of their gaze in seconds. The data are as follows: 12, 17, 18, 20, 20, 29. Calculate the mean, median, mode, range, variance and standard deviation for the sample.

Calculate the standard deviation and variance of the given random sample data. Round to two decimal places. x 6.9 3.2 29.9 20.7 27 13.6 PART A: WHAT IS THE Standard deviation:   PART B : WHAT IS THE Variance

More time on the Internet: A researcher polled a sample of 1097 adults in the year 2010, asking them how many hours per week they spent on the Internet. The sample mean was 9.42 with a standard deviation of 13.23 . A second sample of 1031 adults was taken in the year 2012 . For this sample, the mean was 10.63 with a standard deviation of 14.47. Assume these are simple random samples from populations of adults. Can you conclude that the mean number of hours per week spent on the Internet increased between 2010 and 2012? Let u1 denote the mean number of hours spent on the Internet in 2010 . Use the a=0.05 level and the p-value method to solve.   State the p-value _______________-

Prof. Torres took her dog Manzy for a walk for 6 days.  These are the number of minutes of each of the 6 days. (Round to hundredths, if needed).  5, 25, 60, 25, 25, 50   What is the mean? What is the sum of squares? What is the sample variance ? What is the sample standard deviation?

Cell Phone Lifetimes A recent study of the lifetimes of cell phones found the average is 23.8 months. The standard deviation is 5.8 months. If a company provides its 33 employees with a cell phone, find the probability that the mean lifetime of these phones will be less than 23.8 months. Assume cell phone life is a normally distributed variable, the sample is taken from a large population, and the correction factor can be ignored. Use a TI-83 Plus/TI-84 Plus calculator. Round your answer to at least four decimal places. <PX23.8)=

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?