Click to see additional instructionsThe critical value used to create a 90% confidence interval for a population mean u based on a random sample of size n = 12, assuming the original population wasnormally distributed with a standard deviation of o = 8 isRound your answer to three decimal places. Click to see additional instructionsTheAccepted characters: numbers, decimal point markers, sign indicators (-), spaces (e.g., as thousands separator, 5 000),noi"E" or "e" (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal pointassuming the original population waslaces.marker.Complex numbers should be in the form {a + bi} where "a" and "b" need to have explicitly stated values.For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not.

Here the population standard deviation is given so we use the z value for computing the confidence…

Click to see additional instructions The critical value used to create a 90% confidence interval for a population mean u based on a random sample of size n = 12, assuming the original population was normally distributed with a standard deviation of o = 8 is Round your answer to three decimal places.

Click to see additional instructions The critical value used to create a 90% confidence interval for a population mean u based on a random sample of size n = 12, assuming the original population was normally distributed with a standard deviation of o = 8 is Round your answer to three decimal places.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A statistics class is estimating the mean height of all female students at their college. They collect a random sample of 42 female students and measure their heights. The mean of the sample is 65.3 inches and the sample standard deviation is 5.4 inches. Find the 90% confidence interval for the mean height of all female students in their school? Assume that the distribution of individual female heights at this school is approximately normal. 1. The t value is 1.3025 2. The standard error has a value of -- 3. The margin of error has a value of 4. Find the 90% confidence interval for the mean height of all female students in their school
What is the z-score of x = 3 if it is 2 standard deviation to the left of the mean? -3 -2 1 O 2 1.
Assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find P15, the 15th percentile. This is the bone density score separating the bottom 15% from the top 85%. How to get and what is the bone density score corresponding to P15 is ?
Please note that answer 1537 was incorrect.
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately o = 76.5. You would like to be 95% confident that your estimate is within 1 of the true population mean. How large of a sample size is required? Hint: Video [+] n =
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately o = 52.2. You would like to be 99% confident that your estimate is within 2.5 of the true population mean. How large of a sample size is required? Hint: Video [+] n =
mg mg Calcium levels in people are normally distributed with a mean of 9.5 and a standard deviation of 0.3 dL dL Individuals with calcium levels in the bottom 15% of the population are considered to have low calcium levels. Find the calcium level that is the borderline between low calcium levels and those not considered low. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place. mg dL X
Assume the data set described is normally distributed with the given mean and standard deviation, and with n total values. Find the approximate number of data values that will fall in the given range. Mean-8 Standard deviation-1.5 n-45 Range: 6.5 to 9.5 In this case, we expect about 52 data values to fall between 6.5 and 9.5.
Only answer part B. Obviously part a is answered
Calcium levels in people are normally distributed with a mean of 9.7 mgdL and a standard deviation of 0.5 mgdL . Individuals with calcium levels in the bottom 10% of the population are considered to have low calcium levels. Find the calcium level that is the borderline between low calcium levels and those not considered low. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place.
A population of scores has a mean of µ=89, a median of 87 and a mode of 85. What is the most likely shape for the population distribution? Symmetrical Positively skewed Negative skewed It cannot be determined from the information given O O
The random sample of n=75�=75 yielded a sample mean of x¯=26�¯=26.Assume that we know the population standard deviation is σ=30�=30. Step 2 of 3 : Calculate a 95% confidence interval for the population mean. Round your answers to 2 decimals places.