Homework Answers
a)expected number of broken eggs =0.4*4 =1.6
b)standard deviation =0.2*sqrt(4) =0.4
c)
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A grocery supplier believes that the mean number of broken eggs per dozen is 0.4 with...
I need help solving this! help is very much appreciated! thank you ? Let y denote...
I need help solving this! help is very much
appreciated! thank you ?
Let y denote the number of broken eggs in a randomly selected carton of one dozen eggs. ply) 0.60 0.20 0.15 0.04 0.01 (a) Calculate and interpretu ? (Round your answer to two (b) In the long run, for what proportion of cartons is the number of broken eggs less than decimal places). Does this surprise you? Yes NO (c) Explain why #, is not equal to...
At a certain coffee shop, all the customers buy a cup of coffee and some also buy a doughnut. The shop owner believes t...
At a certain coffee shop, all the customers buy a cup of coffee and some also buy a doughnut. The shop owner believes that the number of cups he sells each day is normally distributed with a mean of 340 cups and a standard deviation of 21 cups. He also believes that the number of doughnuts he sells each day is independent of the coffee sales and is normally distributed with a mean of 150 doughnuts and a standard deviation...
Survival Analys.. At a certain coffee shop, all the customers buy a cup of coffee and...
Survival Analys.. At a certain coffee shop, all the customers buy a cup of coffee and some also buy a doughnut The shop owner believes that the number of cups he sells each day is normal distributed with a mean of 330 cups and a standard deviation of 23 cups. He also believes that the number of doughnuts he sells each day is independent of the coffee sales and is normally distributed with a mean of 180 doughnuts and a...
Suppose the following data represent the ratings (on a scale from 1 to 5) for a...
Suppose the following data represent the ratings (on a scale from 1 to 5) for a certain smart phone game, with 1 representing a poor rating. Complete parts (a) through (d) below. Stars 1 2 3 4 5 Frequency 2363 2679 4222 3688 10,166 (a) Construct a discrete probability distribution for the random variable x. Stars (x) P(x) 1 2 3 4 5 (Round to three decimal places as needed.) (b) Graph the discrete probability distribution. Choose the correct graph...
If a gambler places a bet on the number 7 in roulette he or she has...
If a gambler places a bet on the number 7 in roulette he or she has a 1/38 probability of winning a. Find the mean and standard deviation for the number of wins of gamblers who bet on the number 7 two hundred and forty times b. Would 0 wins in two hundred and forty bets be an unusually low number of wins? a. The value of the mean is u = 6.3 (Round to one decimal place as needed.)...
Let the random variable x represent the number of girls in a family with three children....
Let the random variable x represent the number of girls in a family with three children. Assume the probability of a child being a girl is 0.31. The table on the right describes the probability of having x number of girls. Determine whether the table describes a probability distribution. If it does, find the mean and standard deviation. Is it unusual for a family of three children to consist of three girls? 0 1 2 3 P(x) 0.329 0.443 0.199...
You play two games against the same opponent. The probability you win the first game is...
You play two games against the same opponent. The probability you win the first game is 0.8. If you win the first game, the probability you also win the second is 0.6. If you lose the first game, the probability that you win the second is 0.4. Complete parts a) through e). a) Are the two games independent? Explain your answer A. Yes; all events are independent. O B. No; the outcome of the first game determines the probability of...
3. In a recent study of 100 eighth graders, the mean number of hours per week...
3. In a recent study of 100 eighth graders, the mean number of hours per week that they watched television was 22.6. Assume the population standard deviation, o, is 5.2 hours. (Section 6.1) Construct a 90% confidence interval for the population mean number of hours that eighth graders watch television • Margin of error, E..8554 Confidence interval:al: 74<us 23.46 If the population standard deviation was reduced by 50% to 2.6 and the level of confidence remained at 90%, what would...
The historical reports from two major networks showed that the mean number of commercials aired during...
The historical reports from two major networks showed that the mean number of commercials aired during prime time was equal for both networks last year. In order to find out whether they still air the same number of commercials on average or not, random and independent samples of 100 recent prime time airings from both networks have been considered. The first network aired an average of 110.8 commercials during prime with a standard deviation of 5.0. The second network aired...
Assume that the heights of adult Caucasian women have a mean of 63.6 inches and a...
Assume that the heights of adult Caucasian women have a mean of 63.6 inches and a standard deviation of 2.5 inches. If 75 women are randomly selected, find the probability that they have a mean height between 63 and 65 inches. O A. 0.3071 B. 0.2119 OC. 0.0188 OD. 0.9811 O E. There is not enough information to determine the probability A recent survey asked respondents how many hours they spent per week on the internet. The sample mean was...
I need help solving this! help is very much
appreciated! thank you ?
Let y denote the number of broken eggs in a randomly selected carton of one dozen eggs. ply) 0.60 0.20 0.15 0.04 0.01 (a) Calculate and interpretu ? (Round your answer to two (b) In the long run, for what proportion of cartons is the number of broken eggs less than decimal places). Does this surprise you? Yes NO (c) Explain why #, is not equal to...
At a certain coffee shop, all the customers buy a cup of coffee and some also buy a doughnut. The shop owner believes that the number of cups he sells each day is normally distributed with a mean of 340 cups and a standard deviation of 21 cups. He also believes that the number of doughnuts he sells each day is independent of the coffee sales and is normally distributed with a mean of 150 doughnuts and a standard deviation...
Survival Analys.. At a certain coffee shop, all the customers buy a cup of coffee and some also buy a doughnut The shop owner believes that the number of cups he sells each day is normal distributed with a mean of 330 cups and a standard deviation of 23 cups. He also believes that the number of doughnuts he sells each day is independent of the coffee sales and is normally distributed with a mean of 180 doughnuts and a...
Suppose the following data represent the ratings (on a scale from 1 to 5) for a certain smart phone game, with 1 representing a poor rating. Complete parts (a) through (d) below. Stars 1 2 3 4 5 Frequency 2363 2679 4222 3688 10,166 (a) Construct a discrete probability distribution for the random variable x. Stars (x) P(x) 1 2 3 4 5 (Round to three decimal places as needed.) (b) Graph the discrete probability distribution. Choose the correct graph...
If a gambler places a bet on the number 7 in roulette he or she has a 1/38 probability of winning a. Find the mean and standard deviation for the number of wins of gamblers who bet on the number 7 two hundred and forty times b. Would 0 wins in two hundred and forty bets be an unusually low number of wins? a. The value of the mean is u = 6.3 (Round to one decimal place as needed.)...
Let the random variable x represent the number of girls in a family with three children. Assume the probability of a child being a girl is 0.31. The table on the right describes the probability of having x number of girls. Determine whether the table describes a probability distribution. If it does, find the mean and standard deviation. Is it unusual for a family of three children to consist of three girls? 0 1 2 3 P(x) 0.329 0.443 0.199...
You play two games against the same opponent. The probability you win the first game is 0.8. If you win the first game, the probability you also win the second is 0.6. If you lose the first game, the probability that you win the second is 0.4. Complete parts a) through e). a) Are the two games independent? Explain your answer A. Yes; all events are independent. O B. No; the outcome of the first game determines the probability of...
3. In a recent study of 100 eighth graders, the mean number of hours per week that they watched television was 22.6. Assume the population standard deviation, o, is 5.2 hours. (Section 6.1) Construct a 90% confidence interval for the population mean number of hours that eighth graders watch television • Margin of error, E..8554 Confidence interval:al: 74<us 23.46 If the population standard deviation was reduced by 50% to 2.6 and the level of confidence remained at 90%, what would...
The historical reports from two major networks showed that the mean number of commercials aired during prime time was equal for both networks last year. In order to find out whether they still air the same number of commercials on average or not, random and independent samples of 100 recent prime time airings from both networks have been considered. The first network aired an average of 110.8 commercials during prime with a standard deviation of 5.0. The second network aired...
Assume that the heights of adult Caucasian women have a mean of 63.6 inches and a standard deviation of 2.5 inches. If 75 women are randomly selected, find the probability that they have a mean height between 63 and 65 inches. O A. 0.3071 B. 0.2119 OC. 0.0188 OD. 0.9811 O E. There is not enough information to determine the probability A recent survey asked respondents how many hours they spent per week on the internet. The sample mean was...
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