Statistics question and answers for November 29, 2023
- Q The owners of a baseball team are building a new baseball field for their team and must determine the number of seats to include The average game is attended by...
- Q The Washington Wheat Farmers Club is studying the impact of rising grain prices on their members planting habits The club members produce an average of 150 million bushels of wheat...
- Q A well known social media company is looking to expand their online presence by creating another platform They know that they current average 2 500 000 users each day with...
- Q An organization has members who possess IQs in the top 4 of the population If IQs are normally distributed with a mear of 105 and a standard deviation of 15...
- Q Two thousand students took an exam The scores are normally distributed with a mean of 81 points and a standard deviation of o 4 points Find the range of scores...
- Q worn poorly set up machine is observed to produce components whose length X follows a normal distribution with a mean equal to 14 centimeters and a variance equal to 9...
- Q A certain type of mango that weighs over 425 grams is considered to be large in size The weights for this type of mango X grams are normally distributed with...
- Q Question A firm s marketing manager believes that total sales for next year will follow the normal distribution with a mean of 3 2 million and a standard deviation of...
- Q The weight of bags of green landscaping gravel X is modeled by normal distribution with a mean 26 7 kilograms and standard deviation 0 3 kilogram Determine the probability that...
- Q In a survey of men aged 20 29 in a country the mean height was 73 4 inches with a standard deviation of 2 7 inches Find the height of...
- Q A local utility company claims that the monthly electricity bills of its customers are among the lowest in the state with an average monthly electricity bill of 97 57 An...
- Q The times to complete an obstacle course is normally distributed with mean 73 seconds and standard deviation 0 9 seconds What is the probability using the Empirical Rule that a...
- Q A Type 1 error is made when O the null hypothesis is not rejected when it was false O the null hypothesis is rejected when it was true O the...
- Q Christopher has collected data to find that the total snowfall per year in Laytonville has a normal distribution What is the probability that in a randomly selected year the snowfall...
- Q A college recently advertised that 86 of its students graduate debt free A student advocacy organization thinks that the college s claim is unlikely The organization collected a random sample...
- Q if the confidence level of a confidence interval is decreased then the width of the confidence interval O increase sometimes but other times decrease O decrease O increase O remain...
- Q In a two tailed hypothesis test for a mean using a 0 03 a researcher calculated a p value of 0 1683 What conclusion can be drawn O The alternative...
- Q Two years ago a public health researcher found that 14 of American teens regularly vaped A different researcher would like to determine if the proportion of Americans that regularly vape...
- Q The width of a confidence interval is affected by the O Type I error O the population mean O sample size O the sample mean
- Q The alternative hypothesis is a claim or statement about a O population parameter that will be declared true only if the null hypothesis is declared false O population parameter that...
- Q Find the area to the right of the z score 1 38 and to the left of the z score 1 53 under the standard normal curve Z 0 00...
- Q Find the area under the standard normal curve between the z scores 0 94 and 0 76 Z 0 00 0 01 1 1 0 1357 0 1335 1 0...
- Q A normal distribution is observed from the number of points per game for certain basketball player The mean for this distribution is 20 points and the standard deviation is 3...
- Q A random sample of hybrid vehicle fuel consumptions has a sample mean of 53 2 mpg and sample standard deviation 4 8 mpg Use the Empirical Rule to estimate the...
- Q A random sample of small business stock prices has a sample mean of 54 82 and sample standard deviation of s 8 95 Use the Empirical Rule to estimate the...
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