Suppose the true proportion of voters in the county who support a new fire district is 0.59. Consider the sampling distribution for the proportion of supporters with sample size n 198. = a. What is the mean of this distribution? μp= b. What is the standard error (i.e. the standard deviation) of this sampling distribution, rounded to three decimal places? =

Q: The population standard deviation           a. is always the same as the sample standard deviation.…

A: Solution: The standard deviation explains the dispersion in the data. The population standard…

Q: Imagine that you and four of your classmates have measured the density of air and recorded the…

A: Let X be an density of air kg/m3. Therefore, X=1.27,1.21,1.28,1.25,1.24 We have to find average,…

Q: average height of a giraffe in 10.3 feet with a standard deviation of 2.5 feet. If you were to…

A: We have given that  Sample size n = 50 Population mean =10.3 Population standard deviation = 2.5

Q: The scores at a golf course recorded last year followed a normal distribution with mean 78 and…

A:

Q: 500 freshmen at Crescent High School took an algebra test. The scores were distributed normally with…

A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

Q: The population has a mean of 14 and a standard deviation of 3. The sample size of your sampling…

A:

Q: Suppose the mean height in inches of all 9th grade students at one high school is estimated.

A: Population standard deviation, σ =3 inches Sample size n=6

Q: Consider a sample with data values of 27, 25, 20, 15, 30, 34, 28, and 25. Compute the 30th, 25th,…

A: Solution : Sort the data values from smallest to largest : 15, 20, 25, 25, 27, 28, 30, 34 here n =…

Q: Suppose that the average length of American songs is 245 seconds with a standard deviation of 28…

A: Solution: Let X be the length of American songs. From the given information, X has mean µ=245…

Q: The average annual income of 10 million people working in Manila is P100,000. The standard deviation…

A: It is given that, Population mean (μ) = 100,000 Population standard deviation (σ) = 2500 Sample size…

Q: Suppose that the weight of male babies less than 2 months old is normally distributed with mean 11.5…

A: From the provided information, Mean (µ) = 11.5 pounds Standard deviation (σ) = 2.7 pounds X~N (11.5,…

Q: students has an average of 300 dollars and a standard deviation of 1,000. Suppose that we take a…

A: It is given that the random variable X i.e, the amount of money in savings accounts follow normal…

Q: he average number of cavities that 30-year-old Americans have had in their lifetimes is 7.0. The…

A: Solution: Given information: n= 16 Sample size  μ=7 Population mean σ= 2.7 Population standard…

Q: Find the mean, the standard deviation and the Z scores corresponding to the minimum and maximum…

A: 2.3, 1.0, 2.1, 6.5, 2.8, 7.8, 1.7, 2.9, 4.4, 5.1, 2.0

Q: onsider this data set { 9, 3, 8, 8, 9, 8, 9, 18}. Find the standard deviation, s. Round off your…

A: given data, 9,3,8,8,9,8,9,18we have to find out the standard deviation(s) for the given data. x…

Q: art professor gives an A to any student in the top 9% of the distribution. The grades are normally…

A: Given X~N(mean μ=60, standard deviations σ=5) P(X>b)=9%

Q: The graph of the annual snowfall distribution (in feet) for a particular county is shown below on…

A: Population Mean,μ = 4.2Population Standard Deviation,σ = 2.8sample size n = 100Want to find out the…

Q: The percent fo Coloradans that own a Subaru is 56%. If you were to take a random sample of size 70,…

A: We have given that,  Let X be the random variable from binomial distribution with probability (p) =…

Q: The mean composite score for seniors who took the SAT in 2010 was 1068. If the standard deviation…

A: From the provided information, Mean (µ) = 1068 Standard deviation (σ) = 100

Q: If the standard error,  of a sample data set is 5 and the standard deviation,  of the distribution…

A: For a population with mean µ  and standard deviation σ, the standard error is σx̅ = σ/√n, where x̅…

Q: For a random sample of 10 men, the mean head circumference is x-bar= 57.3 cm and the sample standard…

A:

Q: A simple random sample of 100 observations was taken from a large population. The sample mean and…

A: Givensample size(n)=100Mean(x)=81standard deviation(s)=9

Q: What type of distribution is this : you measure the GPA of every student in a high school to the…

A: For Normal distribution, the mean, median and mode are same. Also, the normal curve is symmetric to…

Q: A population is normally Distributed with a mean of 9 and a standard deviation of 2.3. What is the…

A: Here from the given information population is normally distributed with mean = 9 and standard…

Q: On the final exam, your friend scored a 93 and you scored a 85. The scores are normally distributed…

A: Obtain the Z-score for the random variable X equals 85. The Z-score for the random variable X equals…

Q: d the mean and standard deviation of the number of red-headed Scots in a randomly selected group of…

A: Let X be the random variable from binomial distribution with probability of  red hair for Scottish…

Q: The mean and standard deviation of a population are 400 and 40 respective. Sample size is 25. What…

A: It is given that the  The mean and standard deviation of a population are 400 and 40 respectively.…

Q: Mean (x) Frequency P(x) 60.5 1 0.028571429 60.75 0.028571429 61 2 0.057142857 61.25 3 0.085714286…

A: Population mean and standard deviation is computed by μ=∑fx∑f and σ=∑fx-μ2∑f, respectively, where x…

Q: Suppose that the weight of male babies less than 2 months old is normally distributed with mean 11.5…

A: According to the given information, we have Mean = 11.5 Standard deviation = 2.7

Q: For a random sample of 10 men, the mean head circumferences are x-bar = 57.3 cm, and the sample…

A: Given data:   The given sample size is n=10. The given mean head circumference is x=57.3 cm. The…

Q: 500 freshmen at Crescent High School took an algebra test. The scores were distributed normally with…

A: Given information: MEan=75 Standard deviation=7

Q: Q21. For the Given values of 91.9, 84, 88.5, 86.8, 89.4,83.6, 80.2, 88.1, 88.5, 93.1 and 93.8…

A: Hello there! Thank you for the question. According to our Honor code we are allowed to answer only…

Q: joans finishing time for the bolder boulder 10k race was 1.77 standard deviations faster than the…

A: We have to find given probability.