Ask Experts Questions for FREE Help !
Ask
    vvicens's Avatar
    vvicens Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Oct 9, 2012, 05:34 PM
    Statistics & Probability
    The diameter of Ping-Pong balls manufactured at a large factory is approximately
    Normally distributed with a population mean of μ = 1.3 inches and a standard deviation of σ = .04 inches. If the quality control department selects several random samples of

    N = 16 Ping-Pong balls:

    a. Compute the standard error of the mean.



    b. What percentage of the sample means will be less than 1.28 inches?



    c. What percentage of the sample means will be between 1.28 and 1.32 inches?


    d. Which is more likely to occur – an individual ball between 1.28 and 1.32 inches or a sample mean between 1.28 and 1.32 inches. Explain your reasoning.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #2

    Oct 9, 2012, 10:07 PM
    Show your attempt please
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Statistics & Probability [ 1 Answers ]

For a normal population with a μ = 70 and σ = 20. What is the probability of obtaining a sample mean greater than 75: a. For a random sample of n = 4 scores? b. For a random sample of n = 16 scores? c. For a random sample of n = 100 scores?

Statistics & Probability [ 1 Answers ]

A farmer wants to grow bigger tomatoes, and injects a strain of tomatoes with a growth hormone to see if it makes them bigger than normal tomatoes. We assume the population of normal, untreated tomatoes has a weight of μ = 50 and σ = 20 considering the distribution of sample means from selecting...

Probability & Statistics [ 19 Answers ]

If there were 5 red octopuses in the ocean, 7 purple octopuses and 9 orange octopuses, what is the probability that you'd see 3 orange octopuses? :confused: help!! I need to know this answer tonight please!

Statistics & Probability. Need solutions &/or answers to all before 4/19 [ 4 Answers ]

CH12 Use the following to answer questions A-B. A roulette wheel has 38 slots in which the ball can land. Two of the slots are green, 18 are red and 18 are black. The ball is equally likely to land in any slot. The roulette wheel is going to be spun twice and the outcomes of the two spins...

Statistics & Probability Cont'd. Deadline 4/19/07! [ 1 Answers ]

Ch 15 J2. In formulating hypotheses for a statistical test of significance, the null hypothesis is often K2. In their advertisements, the manufacturers of a certain brand of oatmeal would like to claim that eating their oatmeal for breakfast daily will produce a mean decrease in cholesterol...

View more questions Search