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    enowak's Avatar
    enowak Posts: 1, Reputation: 1
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    Nov 28, 2009, 05:52 PM
    A politician wants to know what percentage of the voters support her position pn the issue of forced busing for integration. What size voter sample should be obtained to determine with 90 % confidence the support level to within 4%?

    Given that 10% of the nails using a certain manufacturing process have a length less than 2.48 inches, while 5% have a length greater than 2.54 inches, what are the mean and the standard deviation of the lenghts of the nails ? Assume that the lenghts have a normal distribution.
    Fr_Chuck's Avatar
    Fr_Chuck Posts: 81,301, Reputation: 7692
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    Nov 28, 2009, 06:21 PM

    I have merged your home work request. We do not do your homework on his site. So please don't ask for us to answer it.

    If you want to give us your opinon of what you think it is or how you believe to figure it out, we will be glad to help you find the answer
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