MATH 225N Week 5 Bundle: Homework Assignments, Lab Assignment, Discussion

A statistics student is trying to decide whether she should take a gamble and play Bingo. The average Bingo player earns $9 per game, distributed normally, with a population standard deviation of $8 . If a sample of 25 Bingo players are selected at random from the population, select the expected ...

Central Limit Theorem for Proportions Week 5 Assignment: 1. A dental student is conducting a study on the number of people who visit their dentist regularly. Of the 520 people surveyed, 312 indicated that they had visited their dentist within the past year. Find the population proportion, as we...

Understanding Normal Distribution: week #5 1. Lexie averages 149 points per bowling game with a standard deviation of 14 points. Suppose Lexie's points per bowling game are normally distributed. Let X= the number of points per bowling game. Then X∼N(149,14). Suppose Lexie scores 186 points in...

Step 1: Survey or measure 10 people to find their heights. Determine the mean and standard deviation for this group by using the Week 3 Excel spreadsheet. Post a screen shot of the portion of the spreadsheet that helped you determine these values. How does your height compare to the mean (average...

Question Sugar canes have lengths, X , that are normally distributed with mean 365.45 centimeters and standard deviation 4.9 centimeters. What is the probability of the length of a randomly selected cane being between 360 and 370 centimeters?  Round your answer to four decimal places. The me...

Understanding the Empirical Rule :week5 1. A random sample of CO2 levels in a school has a sample mean of x¯=598.4 ppm and sample standard deviation of s=86.7 ppm. Use the Empirical Rule to determine the approximate percentage of CO2 levels that lie between 338.3 and 858.5 ppm. To use the Empir...

Week 5 Assignment: Understanding Normal Distribution Question John averages 58 words per minute on a typing test with a standard deviation of 11 words per minute. Suppose John's words per minute on a typing test are normally distributed. Let X= the number of words per minute on a typing test. ...