if E=0.07 and population standard deviation=0.8 then find the sample size for 99% confidence interval.

Q: Using the same chart/data.   To the nearest​ million, how much should the grand prize be so that you…

A: For the lottery to be profitable, we need E(X) - 1 > 0. If the cost of a lottery ticket is $1,…

Q: For each of the following experiments, state the sample space S. a. A coin is to be flipped 3…

A: Experiments are given. To state the sample space.

Q: The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 33…

A: Answer: From the given data, The mean daily production of a herd of cows is normally distributed…

Q: Find the indicated area under the standard normal curve. To the left of z = -2.92 and to the right…

A: From the provided information, The area is under the standard normal curve to the left of z = -2.92…

Q: (a) How many possibilities are there to give 30 identical cookies to 4 kids? (b) How many…

A: To distribute 30 identical cookies among 4 kids, we can use the stars and bars method.   We can…

Q: In a study of treatments for very painful "cluster" headaches, 149 patients were treated with oxygen…

A: From the provided information, x1=117 , n1=157, x2=38,…

Q: The number of calls received by an office follows Poisson distribution with a mean of 8 calls.…

A: Answer: From the given data, Let X: number of calls received by an office follows X follows Poisson…

Q: Chicken Delight claims that 90% of its orders are delivered within 10 minutes of the time the order…

A: sample size(n)=100 x=82 significance level(α)=0.10 claim is that 90% of the orders are delivered in…

Q: How would a 90​% interval compare with the others in​ width?   A. A 90​% interval would be narrower…

A: How the 90% interval compared with the others in width.

Q: In a simple random sample of 1200 young​ people, 86​% had earned a high school diploma. What is the…

A: The formula of the standard error of the estimate is, Where,   p denotes the population proportion…

Q: a. Verify that this table is a valid probability distribution function. b. What is the probably that…

A: Here given probability distribution of random variable X . X = no of limbs are injured

Q: According to recent data, 21 percent of people are left handed. In a sample of 100 people, how many…

A: The expected number of the left handed people is obtained below as follows:   From the information,…

Q: QUESTION 17 Suppose a researcher observes a population of 25 people and computes SS= 360 In this…

A: Answer: From the given data, Sample size (N) = 25 Sum of squares (SS) = 360

Q: Only answer the questions typed: A. indicate whether it's one or two sided B. Indicate whether it's…

A: The test is to check whether more than 10% of the population sampled had completely abstained from…

Q: how did you get the z a/2?

A: how did you get the z a/2?

Q: A small city is divided into four quadrants of 25 square kilometers each and has two fire trucks…

A: μA=∫A10-3dx×dy for A⊂-5, 5×-5, 5

Q: 1. ANOVA is an omnibus test     True   False   2. OLS can be used for regression and ANOVA   True…

A: 1)- True -   ANOVA (Analysis of Variance) is an omnibus test, which means it is a statistical test…

Q: b. Let X1, X2, X3, and X4 represent the weight of shipment packages at a certain shipment facility.…

A: X1,X2,X3 and X4 are the independent random variables. The mean of the random variables are μ1=0.8,…

Q: A binomial probability experiment is conducted with the given parameters. Compute the probability of…

A: The binomial probability formula is given by:   P(x) = nCx * Px * (1 - P)(n - x)   where: n is the…

Q: 46 75 40 64 Vehicles with functioning muffler ( 70 43 75 68 54 38 52 72 65 55 62 58 76 Average noise…

A: The data is given and we to fid the correlation and correlation as  y = a+ b x r=σxσy b

Q: A clinical trial was conducted to test the efficacy of different vitamin supplements (namely,…

A: To estimate the hazard function by year for each group, we can use the following formula: h(t) =…

Q: If the population standard deviation of a normal distribution is 2.8, then find the standard…

A: Answer: From the given data, Population standard deviation = 2.8 number of observations = 68

Q: 3. If cheese consumption has gone up, the Cheese Club of America will decide to spend $500,000 and…

A: It is required to describe the Type I and Type II errors, and discuss their consequences.

Q: Fill in the blank. The tells us that for a population with any distribution, the distribution of the…

A: We know that, Central Limit Theorem (CLT) states that if given a sufficiently large sample size i.e.…

Q: Which is the best measure of central tendency (mean, median, or mode)? Why?

A: Data: 32 36 29 34 31 33 27 34 The sample size is n=8.

Q: "If a Ho is REJECTED at the 5% level of significance, it may be NO significance." (True/False)?…

A: At α=0.05 is rejected H0 And what will be 0.025 level of significance.  NOTE:- According to bartleby…

Q: Planners in the city of Middletown wanted to estimate the mean number of people per household from a…

A: Answer: From the given data, Sample size (n) = 250 Sample mean x¯ = 2.5 Standard deviation (s) = 0.2…

Q: How does the standard deviation help one's understanding of the set of data when used it and the…

A: The standard deviation measures the amount of spread in a set of data.

Q: (a) From lectures we know (b) Let n Σ(-)² ~ x²(v). What is the value of ? i=1 = n 1 120 1 i=1 n-…

A:

Q: Calculate the probabilities P(X=x) of the probability distribution of X. First, fill in the first…

A:

Q: a) What is the probability that a randomly chosen mouse has a mass of less than 20.04 grams? b) What…

A: As per policy I have calculated first 3 subparts plz REPOST for remaining parts . The mass of a…

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: Sample of size n=334 people with favourable number of people had flu x=31 Then the proportion of…

Q: The necessary value for Za/2 was determined to be 1.645. Recall the given information. Sample 1…

A: Zcritical=1.645 at level of significance ɑ=0.10 for two tailed

Q: Exercise 22. In the lecture notes we use a regression line of the form y = a + 3x to predict y from…

A: Here, the two regression lines are given as :y=α+βx and x=γ+δy. The regression lines are used to…

Q: suppose a fair coin is tossed until a head comes up for the first time. What are the chances of that…

A: Finding distribution:

Q: Suppose there are 12 blue, 8 white and 6 red balls in a bag. If one ball is randomly selected…

A: Answer: From the given data, Number of blue balls = 12 Number of white balls = 8 Number of red balls…

Q: The probability that a person catches a cold during the cold and flu season is 0.4. If 10 persons…

A: We have given that- P(a person catches a cold during the cold and flu season) = 0.4 Sample size, n =…

Q: Determine whether the following graph can represent a variable with a normal distribution Explain…

A:

Q: The life of light bulbs is distributed normally, the standard deviation of the lifetime is 26 hours…

A: normal distribution μ = 550 hoursσ = 26 hours P(x≤600) = ?

Q: (a) Approximately (Round to two decimal places as needed.) % of the SAT verbal scores are less than…

A: Let X be the random variable that SAT critical reading scores. Given that, X~N(μ=513, σ=110)

Q: The stacked column graph below shows. additional information from the Bureau of Labor Statistics¹…

A: The clustered stacked column chart is given.

Q: ↑ A study was done on body temperatures of men and women. The results are shown in the table. Assume…

A: According to the given information in this question We need to find test statistic and p value

Q: Population 1 Population 2 Population 3 Population 4 12.54 10.57 9.73 7.54 13.84 11.34 10.74 9.14…

A: To construct the ANOVA table, we can follow these steps: Step 1: Calculate the mean and variance of…

Q: Many members of a certain workforce died from cancer supposedly resulting from exposure to…

A: It is given that  Population proportion, p = 40% = 0.40 Favourable cases, X = 92 Sample size, n =…

Q: A manager wanted to expand the operation of his firm. He was however wondering if the expansion will…

A: This question investigates the profitability of an expansion of a firm using linear regression…

Q: What does df denote? OA. The sample size OB. The sample standard deviation OC. The number of degrees…

A: Number of observation n=26  Using t-test for observing population mean time is greater than 88…

Q: Entomologists estimate that an average person consumes almost a pound of bug parts each year. There…

A: We can model the number of insect fragments in a 20-gram sample of peanut butter as a Poisson random…

Q: he curve corresponding to this probability Left of a value -2 -1 Click and drag the arrows to adjust…

A: X~N( 0 , 1 )   μ=0 , ?=1 (for standard normal distribution)   Z-score =( x - μ )/?

Q: Calculate the mean and standard deviation for the binomial distribution, n=25 , P= 0.86 Round…

A: Answer: From the given data, Sample size(n) = 25 P = 0.86 X follows binomial distribution,

Q: Suppose 30 respondents are a simple random sample from the survey measuring age are having a sample…

A: Sample size(n)=30 sample mean(x¯)=37 Population standard deviation(σ)=11.89