The annual earnings​ (in dollars) of 35 randomly selected microbiologists are shown in the data table. Use the data to​ (a) find the sample​ mean, (b) find the sample standard​ deviation, and​ (c) construct a​ 98% confidence interval for the population mean. 99,787, 80,717, 77,403, 68,172, 51,312, 68,142, 94,108, 65,903 79,143, 74,503, 44,731, 87,244, 60,749, 57,817, 55,126, 78,738 47,902, 99,445, 80,392, 92,412, 63,943, 74,342, 51,108, 60,736 92,334, 84,077, 80,265, 64,130, 74,307, 56,545, 47,168, 89,562 75,338,  61,842, 82,989 a) Find the sample mean. X=_____  (Type an integer or decimal rounded to two decimal places as​ needed.)

Q: Nine hundred (900) high school freshmen were randomly selected for a national survey. Among survey…

A: Given,   Sample size = 900 Sample mean = 2.7 Sample standard deviation = 0.4   Calculation:…

Q: Salaries of 39 college graduates who took a statistics course in college have a​ mean, x of $63,300.…

A:

Q: A corporation that maintains a large fleet of company cars for the use of its sales staff is…

A: Sample size (n) =10 Here sample data is given hence we use T Test to find confidence interval…

Q: A large school district held a district-wide track meet for all high school students. For the 2-mile…

A: x1 = 8.8 s1 = 3.3 x2 = 7.3 s2 = 2.9 n1 = 8 n2 = 8

Q: The article “Unmarried Couples More Likely to Be Interracial” (San Luis Obispo Tribune, March 13,…

A: An article said that 7% of married couples in the united states are mixed racially or ethnically.…

Q: A committee is interested in the mean amount of time individuals waste at the courthouse waiting to…

A: 95% confidence interval for the population mean time wasted is found as (7.12 , 8.88). we are…

Q: The incubation time for Rhode Island Red chicks is normally distributed with mean of 30 days and…

A: Let X be the incubation time for the chicks. It is given, X~N30, 22 To calculate P[24<X<26]…

Q: What is the margin of error, rounded off to two decimal places, of a 95% confidence interval for the…

A: It is given that Sample size n = 8 The critical value of t at df = (n - 1) = 7 and 95% confidence…

Q: Assume that the mean and standard deviation of a sample 10 units respectively. if the sample size is…

A: Sample size is n=25, sample standard deviation is 10 and mean is 10. The critical value is 2.0639…

Q: Consider a sample of 8 hypertensive smoking adults. Their serum cholesterol level readings are as…

A: Margin of error of a point estimate provides the extent of accuracy with which the value of the…

Q: Suppose a sample of Burger King owners who serve customers for breakfast report their number of…

A: The summary of statistics is, x¯=53,s=5.8,n=25 The degree of freedom is, df=n-1   =25-1   =24…

Q: Salaries of 48college graduates who took a statistics course in college have a​ mean,x​, of $66,400.…

A:

Q: The mean salary of an office clerk in America is $22,000 monthly with standard deviation equal to 5,…

A: Given,mean(μ)=$22,000standard deviation(σ)=$5,000sample size(n)=150

Q: Use the values below to compute the sample standard deviation. Please show work.

A: The sample standard deviation is denoted by s. The formula for the sample standard deviation (s) is…

Q: In an effort to estimate the mean amount spent per customer for dinner at a major Atlanta…

A: From the provided information, Sample size (n) = 49 Sample mean (x̅) = $24.80 Population standard…

Q: what would the 95% confidence limits for a sample of 120 with a mean of 51 and a standard deviation…

A: It is given that mean and standard deviation are 51 and 12, respectively.

Q: According to a study done this year by Move.org, the cost of living in San Diego was right-skewed…

A: Given: Population Mean μ = 2665 Population Standard deviation σ = 1344   Formula Used: Z-score =…

Q: 1. The weekly allowance of all the students in a cortain university has an average of Php 1,000 and…

A: Given : Population Mean (μ) = 1000 Population Standard deviation (σ) = 10  Sample size (n) = 50

Q: Determine the margin of error for the confidence interval for the mean: 21+1.2 The margin of error…

A: Confidence Interval formula for mean is given by, => (X bar + - z* sigma/√n) Where X bar is mean.…

Q: A sample of 12 pregnant women had the following pulse rate, in beats per minute, measured when they…

A:

Q: s) In a study, it was estimated that the average annual expenditure on take-out was Php 75000 for…

A: Given,sample size(n)=65sample mean(x)=75000standard deviation(s)=20,000α=1-0.95=0.05α2=0.025degrees…

Q: 2. In a recent study of 35 college students, the mean number of hours per week that they played…

A: According to the given information in this question  We need to find the 95% confidence interval

Q: "The water bills for residents in Davao City have a mean of Php3406 and a standard deviation of…

A: We have given that,  Mean = 3406, population standard deviation (σ)= 236 and sample size (n) = 109…

Q: An adventure company runs two obstacle courses, Fundash and Coolsprint. The designer of the courses…

A:

Q: The Census Bureau reports that 82% of Americans over the age of 25 are high school graduates. A…

A: According to the provided information, n= 1130 p=0.82

Q: How many times per day does an American access the internet? Suppose that the distribution of the…

A: Given that, The mean of the sampling distribution is, The standard deviation of the sampling…

Q: Assume a recent sociological report states that university students drink 5.10 alcoholic drinks per…

A:

Q: Describe the distribution of sample means (shape, expected value, and standard error) for samples of…

A: Sampling distribution of sample mean: For sufficiently large n ≥30 the sampling distribution of…

Q: Assume a recent sociological report states that university students drink 4.14 alcoholic drinks per…

A: Solution: Let X be the number of alcoholic drinks drink by students per week. From the given…

Q: Suppose the true proportion of voters in the county who support a new fire district is 0.55.…

A: Given Information: Population proportion Sample size   If repeated samples of size n are taken…

Q: Find the mean and sample standard deviation of these data. Round of to the nearest hundredth.…

A: Given data: 514, 507, 502, 498, 496, 506, 458, 478, 463, 514 Mean is the sum of observations divided…

Q: What is the other term for the standard deviation of the sampling distribution of the sample means O…

A: We have given that the statement about to the standard deviation of sampling distribution of sample…

Q: Assume that the population has a normal distribution. Thirty randomly selected students took the…

A:

Q: The College Board reported that the average number of freshman class applications to public colleges…

A: Given that, Sample size of colleges n=32 Sample mean number of freshman class applications x¯=5812…

Q: To decide what personnel requirements should be enforced, a hospital manager wants to estimate the…

A:

Q: An adventure company runs two obstacle courses, Fundash and Coolsprint. The designer of the courses…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: the standard deviation for the sample distribution of mean is called?

A: Given: To find = the standard deviation for the sample distribution of mean is called ?

Q: A corporation that maintains a large fleet of company cars for the use of its sales staff is…

A: Given data is2173,2386,1945,2494,2694,2084,2093,2394,2668sample size(n)=9

Q: What value of z would you use to calculate the 98% confidence interval for a population mean, given…

A:

Q: ne hundred (900) high school freshmen were randomly selected for a national survey. Among survey…

A: Given data,Mean x=2.7sd     σ=0.4n=900What is the margin of error at 95% confidence level?

Q: An adventure company runs two obstacle courses, Fundash and Coolsprint. The designer of the courses…

A: From the provided information,

Q: At a local veterinary office, 48% of dogs get their teeth cleaned, while 35% of cats get their teeth…

A: Percentage of Dogs getting their teeth cleaned = 48% = pD Percentage of Cats getting their teeth…

Q: Find the margin of error at a 98% confidence level.

A:

Q: Salaries of 44 college graduates who took a statistics course in college have a mean, x, of $64,700.…

A: Given: Mean, x̄ = 64700 Standard deviation, σ= 11133 Sample Size,n=44 Alpha=1-0.95=0.05

Q: Suppose a sample of Burger King owners who serve customers for breakfast report their number of…

A:

Q: a) The time a patient must wait before being attended by a physician in a hospital has been observed…

A: (a) The null and alternative hypothesis is, Ho: \mu = 65μ=65 Ha: \mu > 65μ>65 This…

Q: It is generally believed that nearsightedness affects about 12% of all children. A local elementary…

A:

Q: Determine the margin of error for the confidence interval for the mean: 16+1.5 The margin of error…

A: We have given confidence interval is- 16 ± 1.5 Since we know that, Confidence interval = the…

Q: We have the number of recorded children from 20 randomly selected barangays in the Philippines to…

A: Variance is the mean squared difference of each observation from their mean. The square root of the…

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.