The average number of stomach contractions in volunteer patients is 260.12 per minute with a sample...
- The average number of stomach contractions in volunteer patients is 260.12 per minute with a sample standard deviation of approximately 247.94. Use the normal distribution to calculate the probability that one patient will have more than 500 contractions in one minute. Show your work.
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The average number of stomach contractions in volunteer
patients is 260.12 per minute with a sample...
Stomach pH values fluctuate between 1.5 and 3.5. The researchers expect that in healthy patients in...
Stomach pH values fluctuate between 1.5 and 3.5. The researchers expect that in healthy patients in their study, this will also be the case, and that approximately 50% of the healthy patients will have a stomach pH below 2.5. After collecting data, they find that 30 of 87 healthy patients, or 34.48%, have stomach pH levels below 2.5. Use this information to answer 1. Assume that the probability that a healthy patient has a stomach pH below 2.5 is 50%....
12.22 The paper "The Effects of Adolescent Volunteer Activities on the Perception of Local Society and Community Spirit Mediated by Self-Conception" (Advanced Science and Technology Letters [...
12.22 The paper "The Effects of Adolescent Volunteer Activities on the Perception of Local Society and Community Spirit Mediated by Self-Conception" (Advanced Science and Technology Letters [2016]: 19-23) describes a survey of a large representative sample of middle school children in South Korea. One question in the survey asked how much time per year the children spent in volunteer activities. The sample mean was 14.76 hours and the sample standard deviation population mean even though the population distribution is not...
Approximately 8.26% of patients in the Seasonal Effect data set contracted an SSI. If this happens...
Approximately 8.26% of patients in the Seasonal Effect data set contracted an SSI. If this happens completely randomly, calculate the probability that three randomly selected patients all contract an SSI in each of the following two ways: Using counting rules and probability trees (10%) Using the binomial distribution (hint: n=3, p=0.0826) (10%) Approximately 8.26% of patients in the Seasonal Effect data set contracted an SSI. If this happens completely randomly, in a random selection of 10, calculate the following probabilities,...
5. At a walk-in clinic, 30 patients arrive per hour on average. What is the probability...
5. At a walk-in clinic, 30 patients arrive per hour on average. What is the probability that the receptionist needs to wait at least 10 minutes for the next patient to walk in? Round your answer to 4 decimal places. 6. Suppose the heights of units of product from a company follow a normal distribution with an unknown mean and standard deviation. They collect a sample of 49 units and find a sample mean height of 23.5 inches and a...
A random sample of 15 students of a certain college an average 78.5 words per minute...
A random sample of 15 students of a certain college an average 78.5 words per minute with a standard deviation of 8.2 words per minute. Find a 99% prediction interval for the average number of words typed by all students of the college. Use t-distribution table in your computation. 53.29 <x0 < 103.71 o 55.86<x0 < 106.29 63.59 <x0 < 69.02 O 72,2 < x < 84,8
Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping...
Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping interval. Based on a certain article, the mean of the x distribution is about $21 and the estimated standard deviation is about $9. (a) Consider a random sample of n = 40 customers, each of whom has 10 minutes of unplanned shopping time in a supermarket. From the central limit theorem, what can you say about the probability distribution of x, the average amount...
Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) ...
Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping interval. Based on a certain article, the mean of the x distribution is about $42 and the estimated standard deviation is about $9. (a) Consider a random sample of n = 100 customers, each of whom has 10 minutes of unplanned shopping time in a supermarket. From the central limit theorem, what can you say about the probability distribution of x, the average amount...
Question 22 4 pts The number of patients admitted per day to a large hospital's ICU...
Question 22 4 pts The number of patients admitted per day to a large hospital's ICU follows a skewed right distribution with a mean of 20 and a standard deviation of 8. Suppose a sample of 100 days was collected over the past year and the average number of patients admitted per day was calculated. Does the Central Limit Theorem apply to this problem? No Yes, since np and nq are both at least 15 Yes, since n is at...
1. Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned)...
1. Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping interval. Based on a certain article, the mean of the x distribution is about $24 and the estimated standard deviation is about $7. Is it necessary to make any assumption about the x distribution? Explain your answer. a. It is not necessary to make any assumption about the x distribution because μ is large. b. It is necessary to assume that x has...
Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping...
Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping interval. Based on a certain article, the mean of the x distribution is about $39 and the estimated standard deviation is about $9 (a) Consider a random sample of n = 90 customers, each of whom has 10 minutes of unplanned shopping time in a supermarket. From the central limit theorem, what can you say about the probability distribution of x, the average amount...
12.22 The paper "The Effects of Adolescent Volunteer Activities on the Perception of Local Society and Community Spirit Mediated by Self-Conception" (Advanced Science and Technology Letters [2016]: 19-23) describes a survey of a large representative sample of middle school children in South Korea. One question in the survey asked how much time per year the children spent in volunteer activities. The sample mean was 14.76 hours and the sample standard deviation population mean even though the population distribution is not...
A random sample of 15 students of a certain college an average 78.5 words per minute with a standard deviation of 8.2 words per minute. Find a 99% prediction interval for the average number of words typed by all students of the college. Use t-distribution table in your computation. 53.29 <x0 < 103.71 o 55.86<x0 < 106.29 63.59 <x0 < 69.02 O 72,2 < x < 84,8
Question 22 4 pts The number of patients admitted per day to a large hospital's ICU follows a skewed right distribution with a mean of 20 and a standard deviation of 8. Suppose a sample of 100 days was collected over the past year and the average number of patients admitted per day was calculated. Does the Central Limit Theorem apply to this problem? No Yes, since np and nq are both at least 15 Yes, since n is at...
Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping interval. Based on a certain article, the mean of the x distribution is about $39 and the estimated standard deviation is about $9 (a) Consider a random sample of n = 90 customers, each of whom has 10 minutes of unplanned shopping time in a supermarket. From the central limit theorem, what can you say about the probability distribution of x, the average amount...
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