Question

Suppose a geyser has a mean time between eruptions of 86 minutes. Let the interval of...

Suppose a geyser has a mean time between eruptions of 86 minutes. Let the interval of time between the eruptions be normally distributed with standard deviation 19 minutes. Complete parts ​(a) through ​(e) below.

(a) What is the probability that a randomly selected time interval between eruptions is longer than 94 minutes?

(b) What is the probability that a random sample of 9 time intervals between eruptions has a mean longer than 94 ​minutes?

(c) What is the probability that a random sample of 31 time intervals between eruptions has a mean longer than 94

​minutes?

(d) What effect does increasing the sample size have on the​ probability? Provide an explanation for this result.

(e) What might you conclude if a random sample of 31 time intervals between eruptions has a mean longer than 94 minutes?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Suppose a geyser has a mean time between eruptions of 86 minutes Let the interval of...
Suppose a geyser has a mean time between eruptions of 86 minutes Let the interval of time between the eruptions be normally distributed with standard deviation 26 minutes . ​(a) What is the probability that a randomly selected time interval between eruptions is longer than 99 ​minutes? ​(b) What is the probability that a random sample of 9 time intervals between eruptions has a mean longer than 99 ​minutes?
Suppose a geyser has a mean time between eruptions of 75 minutes. Let the interval of...
Suppose a geyser has a mean time between eruptions of 75 minutes. Let the interval of time between the eruptions be normally distributed with standard deviation 26 minutes. Complete parts ​(a) through ​(e) below ​ (a) What is the probability that a randomly selected time interval between eruptions is longer than 87 ​minutes? ​(b) What is the probability that a random sample of 13 time intervals between eruptions has a mean longer than 87 ​minutes? ​(c) What is the probability...
Suppose a geyser has a mean time between eruptions of 79 minutes. Let the interval of...
Suppose a geyser has a mean time between eruptions of 79 minutes. Let the interval of time between the eruptions be normally distributed with standard deviation 22 minutes. Complete parts ​(a) through ​(e) below. ​(a) What is the probability that a randomly selected time interval between eruptions is longer than 90 ​minutes? The probability that a randomly selected time interval is longer than 90 minutes is approximately nothing. ​(Round to four decimal places as​ needed.) ​(b) What is the probability...
Suppose a geyser has a mean time between eruptions of 84 minutes. If the interval of...
Suppose a geyser has a mean time between eruptions of 84 minutes. If the interval of time between the eruptions is normally distributed with standard deviation 27 minutes A. Whats the probability that a random sample of 13 time intervals between eruptions has a mean longer than 95 minutes. B. Whats the probability that a random sample of 28 time intervals between eruptions has a mean time longer than 95 minutes. C. What effect does increasing the sample size have...
Suppose a geyser has a mean time between eruptions of 85 minutes. Let the interval of...
Suppose a geyser has a mean time between eruptions of 85 minutes. Let the interval of time between the eruptions be normally distributed with standard deviation 23 minutes. What is the probability that a random sample of 9 time intervals between eruptions has a mean longer than 96 ​minutes? The probability that the mean of a random sample of 9 time intervals is more than 96 minutes is approximately _______. ​(Round to four decimal places as​ needed.)
Suppose a geyser has a mean time between eruptions of 85 minutes. Let the interval of...
Suppose a geyser has a mean time between eruptions of 85 minutes. Let the interval of time between the eruptions be normally distributed with standard deviation 23 minutes. What is the probability that a random sample of 18 time intervals between eruptions has a mean longer than 96 ​minutes? The probability that the mean of a random sample of 18 time intervals is more than 96 minutes is approximately_______. ​(Round to four decimal places as​ needed.)
Suppose a geyser has a mean time between eruptions of 61 minutes. Let the interval of...
Suppose a geyser has a mean time between eruptions of 61 minutes. Let the interval of time between the eruptions be normally distributed with standard deviation 20 minutes.Complete parts ​(a) through ​(e) below. ​(e) What might you conclude if a random sample of 35 time intervals between eruptions has a mean longer than 69 ​minutes? Select all that apply. a)The population mean may be less than 61 b)The population mean may be greater than 61 c)The population mean must be...
Suppose a geyser has a mean time between eruptions of 70 minutes If the interval of...
Suppose a geyser has a mean time between eruptions of 70 minutes If the interval of time between the eruptions is normally distributed with standard deviation 20 minutes answer the following questions. ​(a) What is the probability that a randomly selected time interval between eruptions is longer than 80 ​minutes? The probability that a randomly selected time interval is longer than 80 minutes is approximately?
The following are the interval times? (minutes) between eruptions of a geyser. Detemine the five number...
The following are the interval times? (minutes) between eruptions of a geyser. Detemine the five number summary and construct a box plot from the data below. 83?84??85???87??89??90??91??92??94??97???97??98???99???104??106?109 The number 5 summary is?
In a sample of 500 eruptions of the Old Faithful geyser at Yellowstone National Park, the...
In a sample of 500 eruptions of the Old Faithful geyser at Yellowstone National Park, the mean duration of the eruptions was 3.32 minutes and the standard deviation was 2.09 minutes. A random sample of size 30 is drawn from this population. a. Describe the sampling distribution of the eruptions of the Old Faithful geyser. b. What is the probability that the mean duration of eruptions is between 2.5 minutes and 4 minutes?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT