Question

Why is a 99% confidence interval wider than a 95% confidence interval?

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Math
Statistics

Hypothesis Testing

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: Suppose you have selected a random sample of n=4n=4 measurements from a normal distribution. Compare...

A: According to the provided information, n=4 Degrees of freedom = (n-1) = 4 - 1 = 3

Q: A scale is tested by repeatedly weighing a standard 9.0 kg weight. The weights for 7 measurements ar...

A: Click to see the answer

Q: In this problem, assume that the distribution of differences is approximately normal. Note: For degr...

A: a) From the given information, the level of significance is 0.05.

Q: The scores on the Wechsler Adult Intelligence Scale are approximately Normal, with ?=100 and ?=15 . ...

A: Click to see the answer

Q: A veterinarian researcher would like to know if the gestation period of an animal can be used to pre...

A: Obtain the linear correlation coefficient between gestation period and life expectancy. Use EXCEL to...

Q: In this problem, assume that the distribution of differences is approximately normal. Note: For degr...

A: The provided data set is,

Q: Hello! I need help on this question on my study guide. Thank you, and appreciate the help!

A: The given statement is, Premise: All vegetables are gross. Premise: Broccoli is a vegetable. Conclus...

Q: In this problem, assume that the distribution of differences is approximately normal. Note: For degr...

A: It is given that the average January deer count 5-year period before and after the highway was built...

Q: Birth weights at a local hospital have a Normal distribution, with a mean of 110110 oz and a standar...

A: Click to see the answer

Q: Please answer all questions a-e

A: Given data of amount of bills for dinner and amount of the tips are shown below a)The scatter plot o...

Q: Hello! I need help on this question on my study guide. Thank you, and appreciate the help!

A: For 2 cups of sugar, 1 cup of butter is necessary. The ratio of butter and sugar is given as follows...

Q: If np greater than or equals 5 and nq greater than or equals 5 ​, estimate P(fewer than 5) with n= 1...

A: Normal approximation to the binomial: From the given information, sample size, n = 13. The probabili...

Q: You work for the U.S. Food and Drug Administration. You have gotten word that a drug manufacturing i...

A: Construct the 96% confidence interval estimate for the mean amount of cold medication the company is...

Q: To assess the accuracy of a laboratory scale, a standard weight known to weigh 1 gram is repeatedly ...

A: Solution: From the given information, confidence level is 0.95, σ=0.01 and E=0.0001.

Q: Amarkal resuarchor solects a simpie random sample of n= 100 users of a social media website lrom a p...

A: It is given that the 95% confidence interval for the mean time spent on the site per day is between ...

Q: DATAfile: Administrator You may need to use the appropriate technology to answer this question. Supp...

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are sol...

Q: Use a Λ2 test to test the claim that in the given contingency table, the row variable and the column...

A: The null and alternative hypotheses are as follows: Null hypothesis: The treatment and the reaction ...

Q: You wish to test the following claim (HaHa) at a significance level of α=0.10 For the context of thi...

A: Solution: State the hypotheses. Null hypothesis: H0: µd=0 That is, the mean difference of post-test ...

Q: Please answer all questions a-e

A: Use EXCEL to construct the regression between the right arm and left arm. EXCEL procedure:   Go to ...

Q: You are conducting a test of the claim that the row variable and the column variable are dependent i...

A: Click to see the answer

Q: The average American gets a haircut every 37 days. Is the average larger for college students? The d...

A: The provided data set is:

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you bel...

A: Click to see the answer

Q: The manufacturer of a sports car claims that the fuel injection system lasts 48 months before it nee...

A: a)   The level of significance is not mentioned here. As 0.05 is used as level of significance in mo...

Q: A researcher develops a new theory that predicts that vegetarians will have more of a particular vit...

A: The result based on the experiment is that the vegetarians do have more of the vitamin, but the diff...

Q: In this problem, assume that the distribution of differences is approximately normal. Note: For degr...

A: The level of significance, α is given as 0.05 (=5%).

Q: An  urban economist wishes to test the claim that the distribution of United States residents in the...

A: State the hypotheses. Null hypothesis: Alternative hypothesis:

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of...

A: Click to see the answer

Q: By using formula for a regression equation is Y' = 3X - 2. What would be the estimated Y score for a...

A: Click to see the answer

Q: Hello! I need help on this question on my study guide. Thank you, and appreciate the help!

A: Given: Total individuals = 12 Number of individuals that brought dogs = 8 Number of individuals that...

Q: A distribution of values is normal with a mean of 205.3 and a standard deviation of 65. Find P93, wh...

A: It is given that the values follow normal distribution with mean 205.3 and standard deviation 65.

Q: A person claims to be able to predict the outcome of flipping a coin. This person is correct 16/25 t...

A: It is given that number of times a person can predict coin flips correctly is 16 and the number of t...

Q: Please list the letter choices thank you

A: Since, p-value having the nonlinear relation to the actual deviation from the mean. Therefore, the p...

Q: The Linear regression is used to predict Y from X in a certain population. In this population, SSY i...

A: Click to see the answer

Q: What is the two-tailed probability value testing the null hypothesis that the population mean is 0? ...

A: Click to see the answer

Q: how to solve 2nd question?

A: Null hypothesis: µ=100. Alternative hypothesis: µ≠100. This is a two-tailed test. Here, the sample m...

Q: 6. A distribution has a shape that is strongly skewed left. Which of the following statements is mos...

A: It is given that the distribution has a shape that is strongly skewed left.

Q: Pete's Tavern is located near a busy intersection in the Village of Bronxville. Every week on averag...

A: Click to see the answer

Q: A 2013 Pew survey asked, Do you feel that embryonic stem cell research is morally wrong?" Of the 200...

A: Determine for calculating a 99% confidence interval for the difference in proportions of men and wom...

Q: What percentage of hospitals provide at least some charity care? Based on a random sample of hospita...

A: Since the sample size is small and population standard deviation is unknown, t distribution can be u...

Q: (a) Find ?z such that the proportion of observations that are less than z in a standard normal distr...

A: a) P(Z<z)= 0,29 z=? From standard normal table, P(Z<-0.55)=0.29   Therefore z=-0.55  

Q: An experiment was run and the following data table was produced: (a) Calculate the correlation coeff...

A: (a)   The conditions for correlation:   If r= ̶ 1, then the correlation between the two variables i...

Q: Using the standard Normal distribution tables, the area under the standard Normal curve correspondin...

A: The area under the standard Normal curve is given by calculating probability which shows the percent...

Q: Data showing the population by state in millions of people follow (The World Almanac, 2012). The dat...

A: (a)   Frequency:   The number of values falls into the particular class interval is termed as freque...

Q: When σ is unknown and the sample is of size n ≥ 30, there are two methods for computing confidence i...

A: Given information- Sample size, n = 81 Sample mean, x-bar = 45.6 Sample standard deviation, s = 6.5 ...

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe t...

A: Click to see the answer