The following sample observations were randomly selected. (Do not round the intermediate values.Negative amount should be indicated by a minus sign. Round your answers to 3 decimal places.) x:553610 y: 46567 a. Determine the 98% confidence interval for the mean predicted when x = 6. b.Determine the 98% prediction interval for an individual predicted when x = 6.

The formula of confidence interval for the given value of x is,The formula of prediction interval…

Answered: The following sample observations were…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A researcher would like to know how much physical endurance is affected by a common herbal supplement. The researcher measures endurance for a sample of n = 9 participants. Each is then given a 30-day supply of the herbs and, one month later, endurance is measured again. For this sample, endurance increased by an average of MD= 6 points with SSD = 216. a. make a point estimate of the mean difference in endurance after taking the herbs. b. make a 95% confidence interval estimate of the population mean difference.
Find the value:
1. A recent study of 22 motorists showed that they spent an average of P750 per week. The standard deviation of the sample was P90. Find the 99% confidence interval of the true mean. Solution: 2. A sample of 15 National Collegiate Athletics Association (NCAA) basketball players had an average height of 6 feet with a sample standard deviation of 0.80 foot. Find the 90% confidence interval of the true mean height of all players. Solution:
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
A statistics practitioner took a random sample of 40 observations from a population whose standard deviation is 22 and computed the sample mean to be 96. Note: For each confidence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the confidence limits. A. Estimate the population mean with 95% confidence. Confidence Interval = B. Estimate the population mean with 95% confidence, changing the population standard deviation to 42: Confidence Interval = C. Estimate the population mean with 95% confidence, changing the population standard deviation to 6; Confidence Interval =
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=51.3. You would like to be 98% confident that your estimate is within 10 of the true population mean. How large of a sample size is required?
please make your answers clear
Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96
Q7 A researcher wants to estimate the mean income of all physicians in a city at a 95% confidence level. The standard deviation of the incomes of all physicians in this city is RM17,500. What sample size is required to obtain an estimate that is within RM5000 of the population mean?
If [1740, 1850] is a confidence interval for a population mean. Find the value of the point estimator of the population mean. Select one: O a. 1910 O b. 1660 O c. 1540 O d. 1795
ANSWER MUST BE IN WHOLE NUMBER 1. Young researchers wants to estimate the average numbers of students spending their time on watching movies. The standard deviation from a previous study is 4 hours. How large a sample must be selected if they want to be: a. 95% confidence from the sample mean by 3.5 hours? b. 99% confidence from the sample mean by 2.5 hours? c. 99% confidence from the sample mean by 3.5 hours?
find the value:

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