The mean amount spent by a family of four on food per month is $490 with...
The mean amount spent by a family of four on food per month is $490 with a standard deviation of $78. Assuming that the food costs are normally distributed, what is the probability that a family spends less than $442 per month?
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The mean amount spent by a family of four on food per month is
$490 with...
The mean amount spent by a family of four on food per month is $507 with...
The mean amount spent by a family of four on food per month is $507 with a standard deviation of $73. Assuming that the food costs are normally distributed. a. what is the probability that a family spends less than $406 per month? Give your answer to 4 decimals. b. what is the probability that a family spends at least $711 per month? Give your answer to 4 decimals.
The mean amount spent by a family of four on food is $500 per month with...
The mean amount spent by a family of four on food is $500 per month with a standard deviation of $50. Assuming that food costs are normally distributed. 1. What is the probability that a family spends less than $400 per month ? A. 0.0359. B. 0.9641. C. 0.4641. D. 0.1151 E. 0.0228 2. What is the probability that a family spends between $450 and $600 per month ? A. 0.3413. B. 0.1587. C. 0.4732. D. 0.8185. E. 0.0728 3....
Please show calculations for this question: The mean amount spent by a family of four on...
Please show calculations for this question: The mean amount spent by a family of four on food per month is $500 with a standard deviation of $75. Assuming that the food costs are normally distributed What is the probability that a family spends less than $410 per month? [z=-1.20; 0.1151] From a sample of 25 families, what is the probability of having a sample mean exceeding $515? [z=1; 0.1587]
The money spent on food per visitor at the Legoland is normally distributed with a mean...
The money spent on food per visitor at the Legoland is normally distributed with a mean of $32.50 and a standard deviation of $10. Use Excel or StatCrunch to solve. a. What is the probability that a randomly selected park visitor will spend less than $20.00?
According to the Insurance Institute of America, a family of four spends between $400 and $3,800...
According to the Insurance Institute of America, a family of four spends between $400 and $3,800 per year on all types of insurar Suppose the money spent is uniformly distributed between these amounts. a. What is the mean amount spent on insurance? Mean - b. What is the standard deviation of the amount spent? (Round your answer to 2 decimal places.) Standard deviation c. If we select a family at random, what is the probability they spend less than $2,000...
The money spent on food per visitor at the Legoland is normally distributed with a mean...
The money spent on food per visitor at the Legoland is normally distributed with a mean of $32.50 and a standard deviation of $10. Use Excel or StatCrunch to solve. a. What is the probability that a randomly selected park visitor will spend less than $20.00? Using the same Legoland scenario above, what is the probability that a randomly selected park visitor will spend more than $40.00?
According to the Insurance Institute of America, a family of four spends between $400 and $3,800...
According to the Insurance Institute of America, a family of four spends between $400 and $3,800 per year on all types of insurance. Suppose the money spent is uniformly distributed between these amounts. What is the mean amount spent on insurance? What is the standard deviation of the amount spent? (Round your answer to 2 decimal places.) If we select a family at random, what is the probability they spend less than $2,000 per year on insurance per year? (Round...
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...
A study found that the mean amount of time cars spent in drive-throughs of a certain...
A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 148.9 seconds. Assuming drive-through times are normally distributed with a standard deviation of 24 seconds, complete parts (a) through (d) below. (a) What is the probability that a randomly selected car will get through the restaurant's drive-through in less than 119 seconds? The probability that a randomly selected car will get through the restaurant's drive-through in less than 119 seconds is...
A study found that the mean amount of time cars spent in drive-throughs of a certain...
A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 139.9 seconds. Assuming drive-through times are normally distributed with a standard deviation of 31 seconds, complete parts (a) through (d) below. Click here to view the standard normal distribution table (page 1). LOADING... Click here to view the standard normal distribution table (page 2). LOADING... (a) What is the probability that a randomly selected car will get through the restaurant's drive-through...
According to the Insurance Institute of America, a family of four spends between $400 and $3,800 per year on all types of insurar Suppose the money spent is uniformly distributed between these amounts. a. What is the mean amount spent on insurance? Mean - b. What is the standard deviation of the amount spent? (Round your answer to 2 decimal places.) Standard deviation c. If we select a family at random, what is the probability they spend less than $2,000...
A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 148.9 seconds. Assuming drive-through times are normally distributed with a standard deviation of 24 seconds, complete parts (a) through (d) below. (a) What is the probability that a randomly selected car will get through the restaurant's drive-through in less than 119 seconds? The probability that a randomly selected car will get through the restaurant's drive-through in less than 119 seconds is...
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