The standard deviation for a population is o = 7,47. A random sample selected from this population gave a mean equal to 48.04. Make a 95% confidence interval for u assuming n = 49. Round your answers to two decimal places.

The standard deviation for a population is o = 7,47. A random sample selected from this population gave a mean equal to 48.04. Make a 95% confidence interval for u assuming n = 49. Round your answers to two 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

Related questions

Q: How large a sample should be selected to provide a 90% confidence interval with a margin of error of…

A: Given,population standard deviation(σ)=60margin of error(E)=9α=1-0.90=0.1α2=0.05Z0.05=1.645

Q: You measure 36 turtles' weights, and find they have a mean weight of 59 ounces. Assume the…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 268.5…

A: It is given that the length of pregnancies is normally distributed with mean 268.5 and standard…

Q: You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample…

A: The provided information are: Population standard deviation σ=4 Margin of error (E) = 0.5 Confidence…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 261.5…

A: Given data, Mean=261.5 sd=17.6 In what range would you expect to find the middle 68% of most…

Q: oncluded at the ax = 0.05 level of significance? me standar dev r this study, we should use Select…

A: Sample sizes n1=57 ,n2=57Sample means x1=27 , x2=31Population standard deviations 8 and 12Note:…

Q: 4: A researcher is testing how effective a new drug is at improving cognitive skills. A sample of n=…

A: Here, population standard deviation σ is known. Hence it is appropriate to use z-score. Using Excel…

Q: You measure 36 textbooks' weights, and find they have a mean weight of 74 ounces. Assume the…

A: Given: Since we know population standard deviation, use z-distribution to find z-critical value.…

Q: How large a sample should be selected to provide a 95% confidence interval with a margin of error…

Q: A distribution of values is normal with a mean of 237.9 and a standard deviation of 28. Find P90,…

A: From the provided information,

Q: A simple random sample of 100 items resulted in a sample mean of 80 . The population standard…

A: Obtain the 95% confidence interval for the population mean. The 95% confidence interval for the…

Q: You measure 46 turtles' weights, and find they have a mean weight of 55 ounces. Assume the…

A: given Sample size n = 46 mean weight of 55 ounces. population standard deviation =12.2 ounces.

Q: How often do women feel sad? A recent GSS asked, "How many days in the past seven days have you felt…

Q: A taxi company claims that its drivers have an average of at least 12.4 years' experience. In a…

Q: How large a sample should be selected to provide a 95% confidence interval with a margin of error of…

A: Population standard deviation, sigma is 50. The z-critical value for 95% confidence interval is…

Q: A statistics practitioner took a random sample of 56 observations from a population whose standard…

A: We have given that, Sample size (n) = 56, population standard deviation (σ) = 35 and sample mean…

Q: You measure the weights of a simple random sample of 64 people from a population. The sample mean is…

A: Provided information is ; sample size(n) = 64 sample mean(x¯ ) = 55 kg Population standard deviation…

Q: How much does the fat content of Brand X hot dogs vary? To find out, researchers measured the fat…

A: Let Y: Fat content of Brand X hot dogs n=10 Given that 95% Confidence interval(CI) for population…

Q: Assume that population mean is to be estimated from the sample described. Use the sample results to…

A: Given95% confidence interval N=361 x = 59.1 seconds. z= 4.9 SecondsFind the margin of error?

Q: alternative hypothesis, u6.5. Use a = 0.05 Conduct a t-test for the null hypothesis H: u = 100…

A: x=110 s=8α=0.05 Null hypothesis :H0:μ=100 alternative hypothesis: H1:μ>100

Q: You are interested in learning about the average online hours per day for ABC College students. Data…

A: 1.

Q: ow large a sample should be selected to provide a 95% confidence interval with a margin error of 4?…

A: confidence in terval is=95 % α=1-CI=1-0.95=0.05population standard deviation:σ=20E=4sample size n=?

Q: Construct the confidence interval for the population mean u. c=0.95 x=15.6 and standard deviation =…

Q: You measure 31 textbooks' weights, and find they have a mean weight of 66 ounces. Assume the…

A: Given: n=31x¯=66 ouncesσ=6.9 ounces

Q: How large a sample should be selected to provide a 95% confidence interval with a margin of error of…

A: Givenconfidence interval(c)=95%margin of error(E)=8standard deviation(σ)=10

Q: ow large a sample should be selected to provide a 95% confidence interval with a margin of error of…

A: Given Information: Confidence level = 95% = 0.95 Margin of Error = 5 Population standard deviation…

Q: A statistics practitioner took a random sample of 43 Note: For each confidence interval, enter your…

A: n = 43 standard deviation = 27 mean = 104 95% confidence interval for mean is given by x±zα2*σn 104…

Q: How large a sample should be selected to provide a 95% confidence interval with a margin of error of…

A: Given, Margin error (E) = 6 Standard deviation = 20 The objective is to find the sample.…

Q: atistics practitioner took a random sample of 49 observations from a population whose standard…

A: Sample size n =49 Sample mean=103 Population standard deviation =25

Q: Use the given degree of confidence and sample data to construct a confidence interval for the…

A: Given, Sample size = 30 Sample mean = 95 Sample standard deviation = 6.6 Since the population…

Q: How large a sample should be selected to provide a 95% confidence interval with a margin of error of…

A: From the provided information, Population standard deviation (σ) = 50 Margin of error (E) = 8…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100.1 and a standard…

A: Given,Mean (μ) = 100.1and standard deviation (σ) = 22.2

Q: A recent survey of 6 social networking sites has a mean of 15.65 million visitors for a specific…

A: A recent survey of 6 social networking sites has a mean of 15.65 million visitors for a specific…

Q: How large a sample should be selected to provide a 95% confidence interval with a margin of error of…

A: Solution: From the given information, σ=10 and E=9. The confidence level is 0.95.

Q: In a random sample of 6 cell phones, the mean full retail price was $537.60 and the standard…

A: Given: The population mean of retail price of cell phones is $431.53. (μ0) Let n represents the…

Q: How large a sample should be selected to provide a 95% confidence interval with a margin of error of…

Q: /hat is the 95% confidence interval for this sample mean? to 82.0 to 67.4 to 82.9 to 67.6

A: As the population standard deviation is known, we will use z distribution. The critical value z at…

Q: How large a sample should be selected to provide a 95 confidence interval with a margin of error of…

A: From the provided information,Confidence level = 95%Margin of error (E) = 4Population standard…

Q: You measure the weights of thirty-six random oranges and find that they have a mean weight of 91…

A: We have given that, Sample mean (x̄) = 91, population standard deviation (σ) = 3.6, sample size (n)…

Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

The standard deviation for a population is o = 7.47. A random sample selected from this population gave a mean equal to 48.04.
Make a 95% confidence interval for u assuming n = 49.
Round your answers to two decimal places.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 4 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Point Estimation, Limit Theorems, Approximations, and Bounds$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions

In N = 25 games last season, the college basketball team averaged ? = 78 points with a standard deviation of ? = 12. In their final game of the season, the team scored 89 points. Based on this information, the number of points scored in the final game was which of the following? far above average above average, but it is impossible to describe how much above average There is not enough information to compare last year with the average. a little above average
The manager at UPS feels that the weights of packages shipped recently are less than in he past. Records show that in the past packages have had a population mean weight of 36.7 pounds and a population standard deviation of 14.2 pounds. A random sample of last month's shipping records yielded a sample mean weight of 32.1 pounds for 64 packages. Does this indicate that the weights of packages recently shipped is less than 36.7 pounds? Use a = 0.01. Use the Classical Approach.
How large a sample should be selected to provide a 95% confidence interval with a margin of error of 8 ? Assume that the population standard deviation is 40. Round your answer to next whole number.
A statistics practitioner took a random sample of 59 observations from a population whose standard deviation is 32 and computed the sample mean to be 95. 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 90% confidence. Confidence Interval= C. Estimate the population mean with 99% confidence. Confidence Interval=
You measure 50 textbooks' weights, and find they have a mean weight of 58 ounces. Assume the population standard deviation is 14.7 ounces. Based on this, construct a 99% confidence interval for the true population mean textbook weight.Report your answers to three decimal places. Confidence Interval = ( , )
I need the answers ,b, c , d, f , g Thank you
You measure 43 backpacks' weights, and find they have a mean weight of 65 ounces. Assume the population standard deviation is 9.3 ounces. Based on this, construct a 95% confidence interval for the true population mean backpack weight.Give your answers as decimals, to two places______ ± ________ounces
How large a sample should be selected to provide a 95% confidence interval with a margin of error of 1? Assume that the population standard deviation is 20. Round your answer to next whole number.
How large a sample should be selected to provide a 95% confidence interval with a margin of error of 10? Assume that the population standard deviation is 40 . Round your answer to next whole number.
How large a sample should be selected to provide a 95% confidence interval with a margin of error of 7? Assume that the population standard deviation is 50. Round your answer to next whole number.
A marine biologist would like to estimate the mean weight of all mahi mahi on the Treasure Coast, using a 99% confidence interval. The standard deviation of the weights of all mahi mahi on the Treasure Coast is known to be 8.2 pounds. How large a sample of mahi mahi should the marine biologist select so that the estimate is within 0.88 pounds of the true population mean. Round the solution up to the nearest whole number. n=
Construct the confidence interval for the population mean.