Suppose the annual earnings of clinical pharmacists follows a normal distribution. A sample of 30 clinical pharmacists are selected at random and the variance in their annual earnings will be calculated as an estimate of the variance of annual earnings for all clinical pharmacists. Find the probability that the estimation error will be within 5% of the true population variance

Q: suppose that a coin is to be tossed four times and let X represent the number of tails that can come…

A: Given: A coin is tossed four times. X represents the number of tails. The objective is to find…

Q: The mean weight of an adult is 76 kilograms with a variance of 100. If 142 adults are randomly…

A: Given  Mean=mu=76 Variance=sigma^2=100 Standard deviation=sigma=10 n=142

Q: The mean height of 15-year-old boys (in cm) is 175 and the variance is 64. For girls, the mean is…

A: 1] μ1=1752] μ1=1653] σ12=644] σ22=645] n1=86]  n2=8

Q: Suppose it is believed that the probability a patient will recover from a disease following…

A:

Q: The probability of a defective product produced in a production process is 0.26. What is the…

A: From the provided information, The probability of a defective product produced in a production…

Q: the probability that a ball dropped from a certain height will strike the ground is 80 percent and…

A: Given: Number of trials or balls (n) = 12 Probability of success  here (p) = 0.80 Let X ~ Bin(12,…

Q: then the value of variance of X is

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: If the variance of a distribution is 16, the standard deviation is?

A: Solution: From the given information, the variance of a distribution is 16.

Q: The quality control manager at a computer manufacturing company believes that the mean life of a…

A: The mean is 105 and the variance is 81.

Q: he results of a statistics examination follow an approximately normal distribution with a mean of 68…

A: Given data,Mean μ=68Variance σ2=64sd     σ=8P(X>82)=?

Q: The mean height of 15-year-old boys (in cm) is 175 and the variance is 64. For girls, the mean is…

A: Given, Mean height of boys is 175 and variance is 64 Mean height of girls is 165 and variance is 64…

Q: Let the variance of Y is 4x^2. What is the standard deviation of Y?

A: Given that: The variance of Y is 4x2.

Q: In a bottling plant, the filling machine works properly when the variance of filling amount equals…

A: Given: Population variance σ2=0.3 Sample size (n) = 30

Q: In a bottling plant, the filling machine works properly when the variance of filling amount equals…

A: χ2 = (n-1)s2σ2

Q: A school has a population of 8000 students with a mean height of 153 cm with a standard deviation of…

A:

Q: The manager of a night club in Boston stated that 95% of the customers are between the ages of 22…

A: It is an important part of statistics. It is widely used.

Q: The mean height of 15-year-old boys is 175 cm and the variance is 64. For girls, the mean is 165 and…

A:

Q: Suppose that we draw a sample of size 49 from a population which has an incomplete gamma…

A: From the given information, Consider, X is the random variable that has incomplete gamma…

Q: The filling machine at a bottling plant is operating correctly when the variance of the fill amount…

A: The variance of the fill amount in ounces is equal to 0.3. The number of sample bottles is equal to…

Q: Suppose the horses in a large stable have a mean weight of 873 lbs, and a variance of 17,161. What…

A:

Q: if the standard deviation of a sample is 0.5 find the variance

A:

Q: A science teacher claims that the mean scores on a science assessment test for fourth grade boys and…

A: From the given information, σ1=σ2M1=138, s1=39,n1=53M2=138,s2=30,,n2=75  α = 0.05 Thus,  Null and…

Q: he mean cost of a five pound bag of shrimp is 47 dollars with a variance of 36. If a sample of 43…

A:

Q: If I have the variance of 36 and the standard deviation of 6, how do I calculate the range?

A: From the provided information, Variance (σ2) = 36 Standard deviation (σ) = 6

Q: The quality control manager at a computer manufacturing company believes that the mean life of a…

A: The quality control manager at a computer manufacturing company believes that the mean life of a…

Q: One of the characteristics of a standard normal curve is that its variance and standard deviation is…

A: We want to tell you which one is the correct choice

Q: if the variance of the water temperature in a lake is 28°, then for how many days would a researcher…

A: It is given that margin of error (E) is 3 and the confidence level is 99%.

Q: The value of the standard deviation will always exceed that of the variance. TRUE OR FALSE

A:

Q: Suppose the horses in a large stable have a mean weight of 807 lbs, and a variance of 5776. What is…

A: Assume,  x denotes the sample mean weight of horses (in lbs). μ denotes the population mean weight…

Q: Suppose babies born in a large hospital have a mean weight of 4090 grams, and a variance of 313,600.…

A: Central limit theorem As per the Central limit theorem, the sampling distribution of sample mean…

Q: The quality control manager at a computer manufacturing company believes that the mean life of a…

A:

Q: The mean points obtained in an aptitude examination is 188188 points with a variance of 361361.…

A: Answer - The mean points obtained in an aptitude examination is  μ = 188 points                with…

Q: Suppose a batch of metal shafts produced in a manufacturing company have a variance of 9 and a mean…

A: The standard normal variate is calculated using the sample mean, population mean, population…

Q: The mean output of a certain type of amplifier is 352352 watts with a variance of 121121. If 5757…

A: Given problem is : The mean output of a certain type of amplifier is 352 watts with a variance of…

Q: What is the standard deviation of a sample of 120 observations, if the variance of the sample 2.56?

A: It is given that the variance of the sample is 2.56.

Q: In general, the standard error of the sampling distribution is __________the standard deviation from…

A: We know that, Standard error is given by, SE= sigma/√n Where sigma is standard deviation and n is…

Q: The head of maintenance at XYZ Rent-A-Car believes that the mean number of miles between services is…

A: According to central limit theorem the sampling distribution of sample mean follows the normal…

Q: In most cases, if you have the variance, how do you compute standard deviation?

A: We have the variance, how do you compute standard deviation.  We use here the formula of variance to…

Q: The mean points obtained in an aptitude examination is 179points with a variance of 225.   What is…

A: Solution: Let X be the points obtained in an aptitude examination. From the given information, X has…

Q: The mean weight of an adult is 71 kilograms with a variance of 100.   If 181 adults are randomly…

A: Let X be a random variable following normal distribution with mean μ and variance σ2, i.e.,…

Q: Suppose the horses in a large stable have a mean weight of 873lbs, and variance of 17,161. What is…

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: Suppose that a random variable X is normally distributed with a mean of 200 and a variance of 625.…

A: Given that X follows a normal distribution with mean=200 and variance= 625 So standard…

Q: Assume the probability that a maple tree at age 10 grows less than 110 cm is equal to 0.4. If the…

A:

Q: horses in a large stable have a mean weight of 1354 lbs, and a variance of 9604. What is the…

A: Suppose the horses in large stable have a mean weight of 1354lbs and variance of 9604. X~N (µ=1354,…

Q: A sample of final exam scores is normally distributed with a mean equal to 20 and a variance equal…

A: Given that, A sample of final exam scores is normally distributed with, Mean = 20 Variance = 25

Q: Suppose it is believed that the probability a patient will recover from a disease following…

A: Given that the probability a patient will recover from a disease following medication is 0.8.…

Q: IF THE VARIANCE OF A POPULATION IS 0.75, THE STANDARD DEVIATION MUST BE?

A: It is an important part of statistics . It is widely used .

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.