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After extensive studies, economists have determined that an average Canadian family can live on their savings...
1. The average amount parents and children spent per child on back-to-school clothes in Autumn 2010...
1. The average amount parents and children spent per child on back-to-school clothes in Autumn 2010 was $527. Assume the standard deviation is $160 and that the amount spent is normally distributed. What is the probability that the amount spent on a randomly selected child is more than $700? (Round to four decimal places) What is the probability that the amount spent on a randomly selected child is less than $100? (Round to four decimal places) What is the probability...
The number of flaws x on an electroplated automobile grill is known to have the following...
The number of flaws x on an electroplated automobile grill is known to have the following probability mass function: p(0) = 0.6; p(1) = 0.2; p(2) = 0.1; p(3) = 0.1 a) Is this random variable continuous or discrete? Justify your answer. b) Verify that this is a proper mass function c) What is the probability that a randomly selected grill has fewer than 2 flaws? Calculate the probability, and use proper probability notation. d) What is the probability that...
help please!!! The following table gives the number (lin millions) of men and women over the age of 24 at each level of educational attainment Did not College a Total Completed Some Gende...
help please!!!
The following table gives the number (lin millions) of men and women over the age of 24 at each level of educational attainment Did not College a Total Completed Some Gender complete high school college graduate high school Males 12.9 15.9 96.3 30.7 90.8 128 41.31037 103.7 Females 12.8 25.7 31.8 17.8 200 62.5 78.1 Total 33.7 A What is the probability that a randomly selected person over the age of 24 did not complete high school?(answer with...
1) Continuous random variables are obtained from data that can be measured rather than counted. A)...
1) Continuous random variables are obtained from data that can be measured rather than counted. A) True B) False 2) Discrete variables have values that can be measured. A) True B) False 3) Determine whether the random variable described is discrete or continuous. The number of minutes you must wait in line at the grocery store A) continuous B) discrete 4) Determine whether the random variable described is discrete or continuous. The total value of a set of coins A)...
State whether the following statement is True or False. The area under the standard normal distribution...
State whether the following statement is True or False. The area under the standard normal distribution curve from negative infinity to infinity is 1. Use the normalcdf feature on the calculator to find the specified area under standard normal distribution curve. Round your answers to four de the nearest ten-thousandth). To the right of z = 1.13 Question 3 (6 points) On the daily run of an express bus, the average number of passengers is 48. The standard deviation is...
these are the only questions i have left can someone help me with these questione please...
these are the only questions i have left can someone help me
with these questione please
An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lb and 171 lb. The new population of pillots has normally duributed weights with a mean of 138 lb and a standard deviation of 25.1 lb. a. If a pilot is randomly selected, find the probability that his weight is between 130 b...
You roll a six-sided die. Find the probability of each of the following scenarios. (a) Rolling...
You roll a six-sided die. Find the probability of each of the following scenarios. (a) Rolling a 6 or a number greater than 3 (b) Rolling a number less than 4 or an even number (c) Rolling a 4 or an odd number (a) P(6 or number> 3)- (Round to three decimal places as needed) (b) P/1 or 2 or 3 or 4 or 6)-( Round to three decimal places as needed.) (c) P(4 or 1 or 3 or 5)...
On average, Americans have lived in 3 places by the time they are 18 years old....
On average, Americans have lived in 3 places by the time they are 18 years old. Is this average less for college students? The 69 randomly selected college students who answered the survey question had lived in an average of 2.83 places by the time they were 18 years old. The standard deviation for the survey group was 1. What can be concluded at the α = 0.10 level of significance? A) For this study, we should use (Z-Test for...
3. Waiting times (in minutes) of customers in a bank where all customers enter a single...
3. Waiting times (in minutes) of customers in a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. Find the mean and median for each of the two samples, then compare the two sets of results. Single Line 6.36.3 6.66.6 6.76.7 6.86.8 6.96.9 7.17.1 7.67.6 7.87.8 7.87.8 7.87.8 Individual Lines 4.14.1 5.55.5 6.06.0 6.16.1 6.26.2 7.87.8 7.87.8 8.78.7 9.29.2 10.010.0 The mean waiting...
25 Anormal population - 0 - 8. A random sample and scores from 54 Wurthe-wore for...
25 Anormal population - 0 - 8. A random sample and scores from 54 Wurthe-wore for this sample is population has a mean of 24. A random sample of 4 scares is obtained from a mal population with probability of obtaining met greater than 22 for this sample! - 20 and a t West - 20 the following samples is deur likely to be obtained For normal perelation with a Band for a sample of n = 4 X- 5...
help please!!!
The following table gives the number (lin millions) of men and women over the age of 24 at each level of educational attainment Did not College a Total Completed Some Gender complete high school college graduate high school Males 12.9 15.9 96.3 30.7 90.8 128 41.31037 103.7 Females 12.8 25.7 31.8 17.8 200 62.5 78.1 Total 33.7 A What is the probability that a randomly selected person over the age of 24 did not complete high school?(answer with...
1) Continuous random variables are obtained from data that can be measured rather than counted. A) True B) False 2) Discrete variables have values that can be measured. A) True B) False 3) Determine whether the random variable described is discrete or continuous. The number of minutes you must wait in line at the grocery store A) continuous B) discrete 4) Determine whether the random variable described is discrete or continuous. The total value of a set of coins A)...
State whether the following statement is True or False. The area under the standard normal distribution curve from negative infinity to infinity is 1. Use the normalcdf feature on the calculator to find the specified area under standard normal distribution curve. Round your answers to four de the nearest ten-thousandth). To the right of z = 1.13 Question 3 (6 points) On the daily run of an express bus, the average number of passengers is 48. The standard deviation is...
these are the only questions i have left can someone help me
with these questione please
An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lb and 171 lb. The new population of pillots has normally duributed weights with a mean of 138 lb and a standard deviation of 25.1 lb. a. If a pilot is randomly selected, find the probability that his weight is between 130 b...
You roll a six-sided die. Find the probability of each of the following scenarios. (a) Rolling a 6 or a number greater than 3 (b) Rolling a number less than 4 or an even number (c) Rolling a 4 or an odd number (a) P(6 or number> 3)- (Round to three decimal places as needed) (b) P/1 or 2 or 3 or 4 or 6)-( Round to three decimal places as needed.) (c) P(4 or 1 or 3 or 5)...
25 Anormal population - 0 - 8. A random sample and scores from 54 Wurthe-wore for this sample is population has a mean of 24. A random sample of 4 scares is obtained from a mal population with probability of obtaining met greater than 22 for this sample! - 20 and a t West - 20 the following samples is deur likely to be obtained For normal perelation with a Band for a sample of n = 4 X- 5...
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