. Sheldon owns a mango farm and the weight of his mangoes are normally distributed with an average weight of 200 grams and a standard deviation of 15 grams. If there are 800 mangoes e the farm, what is the mean and standard deviation of the sample mean weights of 50 mangoes?

Q: The mean value of land and buildings per acre from a sample of farms is $1500, with a standard…

A: The mean is 1500 and the standard deviation is 300.

Q: In a Statistics course the professor uses the following grading policy: the bottom 5% of students…

A: Given that  b .Find the probability that a randomly selected student gets an 80 or better? c.…

Q: According to the National Association of Home Builders, the average cost of building a home in the…

A: The provided information are:

Q: A parenting magazine reports that the average amount of wireless data used by teenagers each month…

A: The question is about hypo. testing Given : Popl. mean amount of wireless data used by teenagers ( μ…

Q: rhea and nick are comparing their recent midterm scores.rhea received a 95 on the midterm and nick…

A: Rhea received a 95 on the midterm and nick received an 84 on the midterm. The mean midterm score in…

Q: What proportion of trucks can be expected to travel between 38,000 and 62,000 miles in the year?

A: Normal distribution is also known as the Gaussian distribution . It is widely used to make complex…

Q: Imagine you are the Chief of a large police department, and you are concerned about drinking among…

A: From the given information, the sample size of 100 police officers. The mean number of drinks per…

Q: A population of scores has a mean = 26, a median = 23, and a mode =22.  What is the most likely…

A: Given: Mean = 26 Median = 23 Mode = 22

Q: In a normal distribution, what does the variance measure?

A: The normal distribution is a symmetric distribution that has a bell-shaped curve.

Q: If the Mean of a data set is 700 and the Variance is 49; Calculate the intervals used for the…

A: Given information, Mean of a data set = 700 Variance = 49 We have to calculate intervals using…

Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

A: Given information Hypothesized mean µ = 19 inches Sample size (n) = 49 Mean x̅  = 18.5 inches…

Q: Consider the following data:  4.1, 2.1, 4.4, 3.8, 3.8, 3.5  What is the sample standard deviation?…

A: The objective of this question is to calculate the sample standard deviation of the given data set.…

Q: Joan’s finishing time for the Bolder Boulder 10K race was 1.81 standard deviations faster than the…

A: Solution: Let X be the  women  finishing time for the Bolder Boulder 10K race has normal…

Q: Is it worth pursuing a doctoral degree in education if you already have an undergraduate degree? One…

A: Let Population 1 be the salaries for people with doctoral degrees and Population 2 be the salaries…

Q: The salaries of professional baseball players are heavily skewed right with a mean of $3.2 million…

A: We have given that  Sample sizes n1= 40 , n2= 35  Sample means xbar1= 3.2 , xbar2=1.9  Standard…

Q: A parenting magazine reports that the average amount of wireless data used by teenagers each month…

A: State the null and alternative hypotheses for the test. Fill in the blank below. H0: μ=6:…

Q: I need help on this question. Toby's Trucking Company determined that on an annual basis, the…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: A researcher has collected the following sample data: 3, 5, 12, 3, 2. The mean of the sample is 5.…

A:

Q: Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She…

A:

Q: Is it worth pursuing a doctoral degree in education if you already have an undergraduate degree? One…

A: The sample size for population 1 is 16, sample mean is 47000 and sample standard deviation is 5200.…

Q: Toby's Trucking Company determined that on an annual basis, the distance traveled per truck is…

A: Given that :  The distance traveled per truck is normally distributed with a mean ( µ ) : 50,000…

Q: The number of incoming students at two campuses of a midwestern university have historically been…

A: Given that the main campus incoming class has a mean of 3,916 and a standard deviation of 375.…

Q: of all adults in a population would say “good” and 65% would say “bad” if they were asked how they…

A: Given: p = 35% = 0.35 n = 1000 The variance is calculated as: The standard deviation can be…

Q: The weights for players in the National Football League (NFL) have a right skewed distributed with a…

A: Solution: Given information Mean =μ= 245 poundsStandard deviations= σ=20 Pounds The distribution is…

Q: The average McDonald's restaurant generates $2.2 million in sales each year with a standard…

A: The random variable sales follow normal distribution. We have to test whether the average sales…

Q: A parenting magazine reports that the average amount of wireless data used by teenagers each month…

A: GivenMean(x)=7.1standard deviation(s)=2.2sample size(n)=16α=0.01

Q: If the weekly grocery expenditure of households in a certain urban market is known to be normally…

A:

Q: A hypothesis regarding the weight of newborn infants at a community hospital is that the mean is 7.1…

A: Given n=7 X=6.1, 8.1, 9.1, 10.1, 7.1, 11.1, and 12.1

Q: Is it worth pursuing a doctoral degree in education if you already have an undergraduate degree? One…

A: Given that the population variances are not the same.Sample sizeSample meanSample standard…

Q: What is the test statistic for this test?

A: The population mean is $50,000, sample size is 100, sample mean is $50,250, and sample standard…

Q: Students preparing for comprehensive exams usually spend many hours studying. Suppose it is known…

A: Given data mean=41.3 standard deviation=6.8 n=72

Q: An instructor claims that the average number of hours needed to study for a final exam in order to…

A: The significance test for single mean is tested using the z test, if the population standard…