In drilling a vertical wellbore, the spacing between major fractures are recorded. It has been found that this spacing is having a mean of 1800 ft anda variance of 3,240.000 ft Estimate the probability that there are no major fractures in the first 3000 ft of drilling and at a depth of 4000- S000 ft?

In drilling a vertical wellbore, the spacing between major fractures are recorded. It has been found that this spacing is having a mean of 1800 ft anda variance of 3,240.000 ft Estimate the probability that there are no major fractures in the first 3000 ft of drilling and at a depth of 4000- S000 ft?

Name: In drilling a vertical wellbore, the spacing between major fractures
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: In drilling a vertical wellbore, the spacing between major fractures are recorded. It has been foundthat this spacing is having a mean of 1800 ft anda variance of 3,240.000 ft Estimate theprobability that there are no major fractures in the first 30

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

In kurtosis, the bell shaped distribution called mesokurtic if the frequency looks more peaked than normal. True or false?
A negatively-skewed distribution has = 60, = 10. If this entire distribution is transformed into z-scores, describe the shape, mean, and standard deviation for the resulting distribution of z-scores.
There is a 5% chance that the mean reading speed of a random sample of 21second grade students will exceed what value?
The first method of moments equation uses the first sample moment about the mean a. True b. False
Previous studies have suggested that human body temperature is normally distributed with a mean of 98.6∘ F and a standard deviation of 0.7∘ F. You sample 35 random humans and find ¯x=99∘ F. To estimate the typical human's body temperature,we should use: TInterval 2-PropZInt 2-SampTInt 2-SampZInt ZInterval 1-PropZInt
a standardize exam scores are normally distributed,in a recent year,the mean test scores was 1490,standard deviation was 320,the test sscores four for studentselected at a random are;1940,1249,and 1380.Find the Zscores that correspond to each vale and determine whether any of the values are unusual
The processing time for the robogate has a normal distribution with mean 21 sec and standard deviation 3 sec. Find the probability that the next operation of the robogate will take 27 sec or less. Click the icon to view the standard normal distribution table. The probability is
A medical research team at the university is investigating the effectiveness of a new medical treatment for a rare disease. Data indicates that under the current treatment, patients have a mean white blood cell count of 23 cells/cc (cubic centimeter). This distribution is understood to be normally distributed, but the population standard deviation is not known. The new treatment will only be deemed effective if it significantly increases the patient’s white blood cell count above 23 cells/cc. The team has applied the treatment to a random sample of 10 patients. They have reported the following blood cell counts: 21, 25, 18, 24, 19, 25, 22, 20, 27, 25 At α = .01, is the new treatment effective?
The two data sets in the table below are dependent random samples. The population of (x - y) differences is approximately normally distributed. A claim is made that the mean difference (x - y) is less than 29.3. X y DII For each part below, enter only a numeric value in the answer box. For example, do not type "z =" or "t=" before your answers. Round each of your answers to 3 places after the decimal point. (a) Calculate the value of the test statistic used in this test. Test statistic's value = -2.760 61 71 58 48 38 41 (b) Use your calculator to find the P-value of this test. P-value $ 4 44 48 66 43 32 30 29 33 (c) Use your calculator to find the critical value(s) used to test this claim at the 0.07 significance level. If there are two critical values, then list them both with a comma between them. Critical value(s) = -1.700 (d) What is the correct conclusion of this hypothesis test at the 0.07 significance level? O There is sufficient evidence to support the claim that the mean…
Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous fortrout. Suppose that a friend tells you that the average length of trout caught in PyramidLake is μ = 20 inches. However, the Creel survey reported that for a random sample of 27fish caught, the mean length was 22.1 inches with a sample standard deviation of 4.3inches. Does this data indicate that the average length of trout caught at Pyramid Lake ismore than 20 inches? Use α = 0.05.a. State the null hypothesis. ___________ State the alternative hypothesis. ________________b. Find the test statistic. ______ c. Find the P-value for the test._____________
Suppose the masses of a batch of 2000 potatoes have a mean of 60 grams with a standard deviation of 8 grams. Assuming the weights have a normal distribution, predict the number of potatoes that would have masses between 45 and 55 grams. Sketch the distribution curve, shade the required probability, and show horizontal scales the population parameters and the z-scores. Solve the problem
I need help with this