Question 3 Given B(10,0.6) for sample size 20.Find the probability for sample mean b. P(X> 6.2)
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- The lengths of adult males' hands are normally distributed with mean 187 mm and standard deviation is 7 mm. Suppose that 18 individuals are randomly chosen. Round all answers to 4 where possible. DO NOT USE EXCEL FORMULA. CALCULATE BY HAND OR CALCULATOR. 1. For the group of 18, find the probability that the average hand length is more than 189. 2. Find the third quartile for the average adult male hand length for this sample size.Can someone please help? Thank you.of 21 Page 5. Reach Distance. The overhead reach distances of adult women are normally distributed with a mean of 200 cm. and a standard deviation of 12.5 cm. (Illustrate each with a graph!) a. Find the probability that an individual distance is greater than 205 cm. Describe the random variable: Describe distribution: b. Find the probability that the mean reach distance for 25 randomly selected adult women is greater than 205 em. Describe the random variable: Is it appropriate for us to use The Central Limit Theorem? Describe the distribution: Cop
- a and b partA sample of 3 measurements are taken and recorded: a =8, y = 10 and z = 7 The sample mean is: x = = 8.33 Fill in the table below. aj (a; - x)2 Ex: 5.34 Ex: 5.34 Ex: 5.34 82 = (z-z)*+(y-a)* +(z-z) Ex: 5.34 (z-2)*+(y-z)* +(z-) = Ex: 5.34Use the Central Limit Theorem to find the mean and standard error of the mean of the sampling distribution. Then sketch a graph of the sampling distribution. The mean price of photo printers on a website is $234 with a standard deviation of $67. Random samples of size 26 are drawn from this population and the mean of each sample is determined. The mean of the distribution of sample means is ??
- 2. Dr. Xyz claims that the average salary of workers in Jones is P35,000. A random sample of 100 workers are found that their mean salary is P40,000. H, H,: EXPLANATION :Typed+ ill 2 Scores on the Scholastic Aptitude Test are normally distributed with µ = 500 and o= 100. Suppose we randomly select 20 persons from the population of all persons who take the test and compute the sample mean, A. What is the standard deviation of the sampling distribution of B. What will be the shape of the sampling distribution of ? ? e. What is the probability that the sample mean, will be greater than 560?
- et's look at attendance between the two leagues and draw some conclusions. For purposes parts D and E, we are assuming that separating the data into 2 groups based on League is considered sampling; thus, we have 2 samples (American League and National League) and assume we do NOT know the population standard deviations for both "populations" (we only have 1 overall population, not 2). What was the average attendance in each league? Round your answer to 3 decimal places. American League average attendance mil National League average attendance mil space space Perform a hypothesis test to determine whether there is a difference in the mean attendance of teams in the American League vs teams in the National League. Use a 0.05 level of significance in your testing procedures. Additionally: You will need to know the standard deviations and variances for attendance in each league to conduct this test. We are assuming that both American and National League attendance…I need help with the 2 questions. Thanks': Consider a puzzle is created where the amount of time it takes an individual to solve the puzzle follows a normal distribution with a standard deviation of 2 minutes. a) If a sample of 13 individuals was collected, what is the probability the sample mean time required to solve the puzzle would be within 1.2 minutes of the population mean? b) What would the required sample size be if we wanted the sample mean to be within half a minute of the population mean with a probability of .9?
