If the population proportion is 0.90 and a sample of size 64 is taken, which is closest to the probability that the sample proportion is less than 0.88? 0.2981 0.7899 0.7019 0.5300 0.2019

Q: he mean height of women in a country​ (ages 20−​29) is 64.4 inches. A random sample of 70…

A:

Q: A population has a standard deviation of 16. If a sample of size 64 is selected from this…

A:

Q: The sizes of car loans in North Carolina have mean $8,452 and a standard deviation $467. The…

A: The mean is 8452 and the standard deviation is 467.

Q: In a region the energy consumption for a family per month averages 1145 kWh and one standard…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: The lengths of Atlantic croaker fish are normally distributed, with a mean of 10.4 inches and a…

A: We have given that  X~N( μ , ?^2 )    μ = 10.4    , ? = 2 3   Z-score =( x - μ )/?  ,

Q: What is the probability of a sample mean being between z-values of -1.58 and 0.79?

A: We have to find  the probability of a sample mean being between z-values of -1.58 and 0.79?

Q: The mean GPA of university students is 2.3 with a standard deviation of 1.2. If you were to draw 36…

A:

Q: Suppose that the mean daily viewing time of television is 8.35 hours per household. Use a normal…

A: Mean()=8.35 hoursStandard deviation()=2.5 hours

Q: Household incomes in the city of Tampa Bay  are right-skewed with an average of 50,270 and standard…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: 4. Suppose an actual census showed that 18.4% of the households in California have incomes in excess…

A:

Q: Assume that the salaries of elementary school teachers are normally distributed with a mean $35,000…

A:

Q: The mean percent of childhood asthma in 43 cities is 2.31 %. A random sample of 30 of these cities…

A: Sample size(n)=30mean()=2.31%Standard deviation()=1.25%

Q: In an certain species of newt, offspring are born either green or black. Suppose that 60% of these…

A: Given Information: p = 60%  Sample size (n) = 144

Q: Suppose that the mean daily viewing time of television is 8.35 hours per household. Use a normal…

A: We have, The mean daily viewing time of television is 8.35 hours per household and a standard…

Q: The Food Marketing Institute shows that 17%  of households spend more than $100.00  per week on…

A: Obtain the probability that the sample proportion will be within + –0.02 of the population…

Q: A three-bulbed flask contains five particles. What is the probability, to three significant figures,…

A: Let us assume X be the random variable representing the number of particles, out of total 5, in the…

Q: According to a poll of adults, about 44% work during their summer vacation. Assume that the true…

A: We have given that  Sample size n= 400 Success of probability = 0.44

Q: A team of researchers obtained a z-score for their sample that was z= 0.50. If they were conducting…

A: The  z-score for their sample that was z= 0.50. The level of significance is α=0.05 The probability…

Q: uppose that the heights of female adults in the United States are normally distributed with a mean…

A: Solution-: Given: μ=65.4inches,σ=2.8inches We obtained the following: (a) P(X is between 66 and 70…

Q: The average number of dropouts for a school district has been 300 per year with a standard deviation…

A:

Q: Suppose that you take a sample of size 15 from a population that is known to be normally…

A: Solution: Given: Suppose that you take a sample of size 15 from a population that is known to be…

Q: Aaliyah is 74 years old. Based on a normal distribution with mean 47.8 years and standard deviation…

A: Formula : Z =(X - μ)/σ

Q: A population proportion is 0.61. Suppose a random sample of 655 items is sampled randomly from this…

A:

Q: Suppose the round-trip airfare between Boston and Orlando follows the normal probability…

A: Step 1: Given informationMean = $387.20Standard deviation = $68.50The distribution used is normal…

Q: The reported rate for colorblindness for men ages 65 and older is 12%. Assume this estimate is the…

A: Given :  Sample size = n = 25 Population proportion = p = 0.12

Q: The probability histogram to the right represents the number of live births by a mother 47 to 51…

A: Given that A histogram is given here with no. Of child and probability.  By using basic probability…

Q: A population of heights is normally distributed with a mean of 68.8 inches and a standard deviation…

A:

Q: In a certain region, the mean annual salary for electricians is $58,650. Let x be a random variable…

A: According to the given information, we have Sample mean = 58650 Sample size = 50 Standard deviation…

Q: chat the average number of weeks an individual is unemployed is 35.2 weeks. Assume that for the…

A: Given, Population mean (μ) = 35.2 Population standard deviation (σ) = 5.6 n=29

Q: In a study of life expectancy in a certain region, the mean age at death was 70 years, and the…

A:

Q: When sampling is done for the proportion of defetive items in a large shipment, where the population…

A: n=200, p=0.07 P(X≥0.09)=?

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.