there is 90% chance that i will drink more than two cups of coffee in the...
there is 90% chance that i will drink more than two cups of coffee in the morning if i do there is a 95% chance that i will be in good mood if i don't drink more than two cups of coffee in the morning then there is a 60% chance that i am in a good mood. If you pick a random day what is the probability that i am in a good mood ?
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there is 90% chance that i will drink more than two cups of
coffee in the...
fee? 5) Amon g coffee drinkers, men drink a mean of 3.4 cups per day with...
fee? 5) Amon g coffee drinkers, men drink a mean of 3.4 cups per day with a standard deviation of 0.8 cup. Assum distribution. e the number of cups per day follows a normal a. What proportion drinks 2 cups per day or more? b. What proportion drinks no more than 4 cups per day?
i. Suppose at a particular coffee shop, 80% of the cups of coffee are sold before...
i. Suppose at a particular coffee shop, 80% of the cups of coffee are sold before noon. If the coffee is purchased before noon, there's a 90% chance it's regular (and a 10% chance it's decaf). If the coffee is purchased after noon, there's a 35% chance it's decaf. (a) What's the probability that a randomly selected coffee purchase is decaf? (b) If we learn that a certain purchased cup of coffee was decaf, what's the probability that the purchase...
2. It’s conventional wisdom that grad students drink 4 cups of coffee per day. A graduate...
2. It’s conventional wisdom that grad students drink 4 cups of coffee per day. A graduate student took a sample of 25 fellow graduate students in her statistics class, and in the sample produced a mean of 3.3 cups per day and a standard deviation of 1.75. Because of this, she believes that the average is actually less than what is commonly thought (4 cups per day). Do we believe the graduate student’s claim or the conventional wisdom? Use a...
In this study, researchers were interested in knowing if the amount of coffee (none, one cup, 4 cups) and the time coffee was ingested (am v. pm) affected student exam performance (exams were in the e...
In this study, researchers were interested in knowing if the amount of coffee (none, one cup, 4 cups) and the time coffee was ingested (am v. pm) affected student exam performance (exams were in the evening). This study took place over a 3-day period. Students were randomly assigned to either ingest coffee in the morning (AM) or the evening (PM). On day one, students were given no coffee; on day two, students were given one cup of coffee; and on...
Suppose that a simple random sample of 145, 91 said they drink coffee in the morning....
Suppose that a simple random sample of 145, 91 said they drink coffee in the morning. Step 1 of 5: What is the sample proportion for people who drink coffee in the morning? Step 2 of 5: Do we have what we need to compute a confidence interval? Yes, it's binomial. Yes, n≥30. Yes, we have a simple random sample, it is binomial with n/.05 gives a value less than the number of people than that in the world, and...
The number of cups of coffee served at a local Tim Horton’s during the morning rush...
The number of cups of coffee served at a local Tim Horton’s during the morning rush hour between 7 and 9 AM is normally distributed. Based on sales a day is described as SLOW if less than 200 cups are served, AVERAGE 200- 249 cups are sold, and BUSY if over 250 cups are sold during the day. A random sample of five days was taken and the sales figures observed. The sample mean is 208 cups and the sample...
4. (15) The number of cups of coffee served at a local Tim Horton's during the...
4. (15) The number of cups of coffee served at a local Tim Horton's during the morning rush hour between 7 and 9 AM is normally distributed. Based on sales a day is described as SLOW if less than 200 cups are served, AVERAGE 200-249 cups are sold, and BUSY if over 250 cups are sold during the day. A random sample of five days was taken and the sales figures observed. The sample mean is 208 cups and the...
According to a Gallup poll, more than half of all Americans drink at least one glass...
According to a Gallup poll, more than half of all Americans drink at least one glass of soda per day. Suppose X is a random variable that represents the number of glasses of soda that a randomly selected American drinks each day. The probability distribution for X is given: X 0 1 2 3 4 P(X=x) .4 .33 .14 .09 .04 Given a randomly selected American drinks at least two glasses of soda each day what is the probability that...
Question 4 20 pts On Monday, Tuesday, and Wednesday, you drink one or more cups of...
Question 4 20 pts On Monday, Tuesday, and Wednesday, you drink one or more cups of coffee while working on your statistics class from home. This past week you had 77,84, and 95 cups. Find the standard deviation for the number of cups for the past three days, and round your answer to 1 decimal place if needed. Question 5 20 pts The table below describes the smoking habits of a group of asthma sufferers. Nonsmoker Occasional Smoker Regular Smoker...
The amount of coffee that people drink per day is normally distributed with a mean of...
The amount of coffee that people drink per day is normally
distributed with a mean of 16 ounces and a standard deviation of 5
ounces. 18 randomly selected people are surveyed. Round all answers
to 4 decimal places where possible.
I don't have a calculator so I have been doing this in Excel. If
I can get the explanation using excel that would be great!
The amount of coffee that people drink per day is normally distributed with a mean...
fee? 5) Amon g coffee drinkers, men drink a mean of 3.4 cups per day with a standard deviation of 0.8 cup. Assum distribution. e the number of cups per day follows a normal a. What proportion drinks 2 cups per day or more? b. What proportion drinks no more than 4 cups per day?
i. Suppose at a particular coffee shop, 80% of the cups of coffee are sold before noon. If the coffee is purchased before noon, there's a 90% chance it's regular (and a 10% chance it's decaf). If the coffee is purchased after noon, there's a 35% chance it's decaf. (a) What's the probability that a randomly selected coffee purchase is decaf? (b) If we learn that a certain purchased cup of coffee was decaf, what's the probability that the purchase...
4. (15) The number of cups of coffee served at a local Tim Horton's during the morning rush hour between 7 and 9 AM is normally distributed. Based on sales a day is described as SLOW if less than 200 cups are served, AVERAGE 200-249 cups are sold, and BUSY if over 250 cups are sold during the day. A random sample of five days was taken and the sales figures observed. The sample mean is 208 cups and the...
Question 4 20 pts On Monday, Tuesday, and Wednesday, you drink one or more cups of coffee while working on your statistics class from home. This past week you had 77,84, and 95 cups. Find the standard deviation for the number of cups for the past three days, and round your answer to 1 decimal place if needed. Question 5 20 pts The table below describes the smoking habits of a group of asthma sufferers. Nonsmoker Occasional Smoker Regular Smoker...
The amount of coffee that people drink per day is normally
distributed with a mean of 16 ounces and a standard deviation of 5
ounces. 18 randomly selected people are surveyed. Round all answers
to 4 decimal places where possible.
I don't have a calculator so I have been doing this in Excel. If
I can get the explanation using excel that would be great!
The amount of coffee that people drink per day is normally distributed with a mean...
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