98% VaR that is acceptable in a 1-year backtest to conclude, at a 95% confidence level, that the model is calibrated correctly? a)5 b)9 c)10 d)12

Q: 1) A sample of 532 Peanut Butter M&M's contains 74 yellow candies; write a 95% confidence statement…

A: In this case, the confidence level is 95%. The 95% confidence interval for the proportion/percentage…

Q: According to the same Pew Internet study, 8% of those with broadband connections are using fixed…

A: The p-value of the test is 0.103. The decision is fail to reject H0.

Q: To assess the effectiveness of a kindergarten-readiness program, 15 children from a random sample…

A:

Q: A New York Times/CBS poll asked the question, "What do you think is the most important problem…

A: Given that p =0.24 E=0.027

Q: A researcher in campaign finance law wants to estimate the proportion of elementary, middle, and…

A: We have to find sample size required.

Q: 5000 teleVision se ercent Tive years thout hee repair. In order to test this claim, a consumer group…

A: The value of z at a 99% confidence level is 2.576, which can be obtained by using the standard…

Q: In a sample of 225 college seniors, 189 responded positively when asked if they have spring fever.…

A: Obtain the 95% confidence interval for the proportion of all college seniors who have spring fever.…

Q: In a study of 480 households, 168 households were found to have 4 cell phones. Find a 95% confidence…

A: Given: x=168 n=480 p^=xn=168480=0.35

Q: 17. A researcher surveys 50 individuals in Smithville and 40 in Amherst, finding that 30% of…

A: State the hypotheses. That is, there is no evidence to conclude that the mobility rates in the two…

Q: Find the minimum sample size needed to estimate the percentage of managers who have a cat. Use a…

A: Given For 99.8% CI is 2.8782 P=0.5 Margin of error=0.06

Q: In Exercises 5–8, use the relatively small number of given bootstrap samples to construct the…

A: The formula for point estimate p-hat  (x/n) is,Let X be the number of women who said that they…

Q: The national Council of Small Businesses wishes to construct a 95% confidence interval for the…

A: In this question, it has been given that margin of error = 0.10,Level of significance = 0.05,We have…

Q: 3. Use the t-distribution table to determine the value of t to construct confidence interval for the…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: In practice, if we don’t know whether the population is normal and our sample size is less than 30,…

A: If we don't know whether the population is normal. In this case we can check it easily by two…

Q: In an article in Marketing Science, Silk and Berndt investigate the output of advertising agencies.…

A: a) Given, Sample size = n = 390Mean = x = 7.48%Standard deviation = σ = 1.48%Level of significance =…

Q: A magazine article conducted a survey of 1000 people in Washington State and found that 26% of the…

A:

Q: If n=160 and ˆp (p-hat) =0.48, find the margin of error at a 99% confidence level

A: Given Data: p^=0.48n=160   We know that, p^-pp^(1-p^)n~ Normal(0,1)

Q: (a) Compute a 95% confidence interval for u, the population mean difference score. (b) Perform a…

A:

Q: According to a report an average person watched 4.55 hours of television per day in 2005. A random…

A:

Q: 1. According to a report published by Gallup Institute on February 20, 2020, based on the interview…

A:

Q: 11. A university planner wants to determine the proportion of spring semester students who will…

A: According to the given information, we have Total number of students = 32 12 students will return…

Q: An investigator has calculated a 95 percent confidence interval for a one-sample t test and found:…

A: The 95% confidence interval is obtained as (97, 105).

Q: The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest…

A: Statistical Hypothesis testing: Hypothesis testing generally uses a test statistic that compares…

Q: a. Locate the​ 95% prediction interval for driving accuracy​ (y) on the​ printout, and give a…

A: a. The MINITAB output is given.

Q: b) Construct the 99% confidence interval for the population mean duration of the longdistance calls…

A: Standard error(sample mean) Sample mean  Z alpha=0.01 = 2.58

Q: to judge the effectiveness of an advertising campaign for a certain brand of pretzel, a company…

A: There are two independent samples which are before and after the ad campaign. We have to construct…

Q: In an article in Marketing Science, Silk and Berndt investigate the output of advertising agencies.…

A: Givenx=115n=390p^=xn=115390=0.2949confidence interval = 90%

Q: 2. As a quality control chemist working for a pharmaceutical company, you compare two production…

A: The given data is: Lot 1: 222, 218, 215, 210, and 228. Lot 2: 220, 218, 224, 217, 219, 221, and 217.…

Q: A. -8.62   B. -77.3   C. -6.78   D. -18.78

A: For group 1, x̅1: Sample mean  = 756 s1: Sample standard deviation = 35 n1: Random size = 50 For…

Q: Show that in Example 4.4.7, page 153, the difference between the two candidates is statistically…

A: The 68-95-99,7 rule says that for a 99.7 confidence interval there is a 3standard error difference…

Q: 30. A research and development engineer is preparing a report for the board of directors on the…

A: Answer: Take a new sample from the population using a larger sample size.

Q: If n=200 and ˆpp^ (p-hat) =0.39, find the margin of error at a 99% confidence level

A: Find z-critical value:…

Q: If n=150 and ˆpp^ (p-hat) =0.25, find the margin of error at a 90% confidence level

A: n = 150p^ = 0.2590% confidence level

Q: (B) In a hospital, an orthopedic doctor collects a random sample of 52 previous patients and checks…

A: Note: According to the guidelines, only the first three subparts have been solved. To get the…

Q: Researchers investigating the new Johnson & Johnson COVID Vaccine selected a random sample of 200…

A:

Q: Find the sample size needed to estimate the percentage of robberies in Texas that result in arrests.…

A: Since p and q are not mentioned (probability), so will assume that both p and q = 0.5 where q = 1-p…

Q: Suppose data collected by observers at randomly selected intersections across the country revealed…

A: a) Given that there are 250 sample of drivers. Among 250 drivers, 50 were using their cell phone.…

Q: The true proportion of c.c. students in her state, that receive an AD, is contained in that specific…

A: It is given that the confidence interval in b is calculated correctly.

Q: in a study of government financial aid for college​ students, it becomes necessary to estimate the…

A:

Q: According to the Central Limit Theorem (CLT), as sample size increases, the confidence intervals:…

A: The sample size is inversely proportion to standard error. If the sample size increases then the…

Q: 1. A random sample of 15 households in Cebu City provided the following data on the number of…

A: Obtain the 99% confidence interval for the true average monthly electricity consumption in kWh.…

Q: 4. Ten students on a low-fat diet designed to lower their cholesterol and recorded their before and…

A: INTRODUCTION ;  PAIRED T TEST  particular situations 1. The sample sizes are equal to n1=n2=n(say)…

Q: b. Construct a 90% confidence interval for the percentage of all judges who are in favor of the…

A: a. A random sample of 15 judges and asked them whether or not they favor the death penalty in which…

Q: 10. A quantity is measured using two different methods with results: x1 = (21.500 ± 0.078) and x2…

A:

Q: A company has 4 (independent) manufacturing plants, and each has $1 million in value. For simplicity…

A: $ 2 million is the correct option.....

Q: 1. Construct a 90% confidence interval for the proportion of employees requiring size 3.

A: here given  A civil engineering firm issues every new employee with a safety helmet. Four different…

Q: Data collected by a behavioral risk factor surveillance group revealed that in a state, 27.9% of…

A: Givena)Let p1 and p2 be the proportion of whites and blacks who were cigarette smokers…

Q: A TV report conducted a survey of 908 people in Phoenix metro area and found that 28% of the…

A: Given Total people n = 908 Probability p = 0.28 we are 94% confident that the true proportion of…

Q: 2. For each of the following sets of sample outcomes, use Formula 7.3 to construct the 99%…

A: Note : According to our guidelines we are solving only first three sub-parts of a question. The…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.