Estimate the current survival proportion

Assignment Help Mathematics
Reference no: EM13803882

A 1976 study of women smokers over 30 years of age who delivered premature babies (fewer than 260 days of gestation) reported an infant survival percentage of 72%. Suppose researchers would like to estimate the current survival proportion.  Using the survival rate from the 1976 study as a preliminary estimate of the current survival proportion, compute the minimum sample size required to estimate the current survival proportion to within .05 with 95% confidence.

 

 

Reference no: EM13803882

Questions Cloud

High-tech manufacturer of digital products. : AppleBerry (AB) is a high-tech manufacturer of digital products. Recently, it has been very successful at manufacturing a portable MP3 player, the Curvy. The Curvy comes in two forms: one with 32 GB of storage and one with 64 GB of storage. In doing ..
Why is each criterion important to a program : When reviewing a program, these are the four criteria for style: Why is each criterion important to a program
What is its weighted average cost of capital : A company has 100 million shares outstanding trading for $5 per share. It also has $600 million in outstanding debt. If its equity cost of capital is 12%, and its debt cost of capital is 10%, and its effective corporate tax rate is 40%, what is its w..
When would a bonds duration equal a bonds maturity : 1. What's the duration of a 30-year zero coupon bond? 2. Can Excel be used to calculate a bond's duration?3. When would a bond's duration equal a bond's maturity?
Estimate the current survival proportion : A 1976 study of women smokers over 30 years of age who delivered premature babies (fewer than 260 days of gestation) reported an infant survival percentage of 72%. Suppose researchers would like to estimate the current survival proportion.  Using the..
Design a roller coaster by making a piecewise function : 1. Design a roller coaster by making a piecewise function using four different polynomial functions. The domain of the function needs to be restricted to prevent overlapping, and should be a smooth ride.
How fast is his shadow increasing : A 6-ft tall man walks away from a 10-ft tall streetlight at 6 ft/sec. How fast is his shadow increasing when he is 8 feet from the streetlight?
Is hedging typically used in active portfolio management : 1. Is hedging typically used in active portfolio management? 2. Do bond mutual fund managers tend to have more success in outperforming their relevant benchmarks than stock mutual fund managers do with their relevant benchmarks?
A population is normally distributed with a mean : Assume that a population is normally distributed with a mean of 300 and a standard deviation of 45. Would it be unusual for the mean of a sample of 9 to be 345 or more? Why or why not?

Reviews

Write a Review

Mathematics Questions & Answers

  Find the number of sides a regular polygon

Find the number of sides a regular polygon has if each interior angle measure is 11 times the measure of each exterior angle.

  Find the max of the profit function

A manufacturer has been selling flashlights at $6 apiece, and at this price, consumers have been buying 3,000/month. The manufacturer wishes to increase the price & estimates that for every $1 he raises the price, 1,000 fewer flashlights will be s..

  At what time does the rocket land

At what time does the rocket land? (Give your answer correct to one decimal place.)

  Find the vertex and x-intercepts of the graph

Explain whether the graph has a maximum or minimum point.

  Find the dimensions of the enclosure

The fence along three sides is to be made of material that costs 6 dollars per foot, and the material for the fourth side costs 14 dollars per foot. Find the dimensions of the enclosure that is most economical to construct.

  Chart of the topological manifold

De?nition of smoothness of functions on a smooth manifold is chart independent and hence geometric.

  How much does leroy need to invest at a rate

The simple interest formula I=prt gives the interest earned on an investment of p dollars at interest rate r for a time of t years. How much does Leroy need to invest at a rate of 7% in order to earn $420 interest in 4 years?

  Predict the salary for an employee

A research shows that employee salaries at company XYX, in thousands of dollars, are given by the equation y-hat= 48.5 + 2.2 a + 1.5 b where ‘a' is the years of experience, and ‘b' is the education level in years.

  Then every fifth etc all the way to every 500th person

imagine there are 500 people lined up in a row each person is holding out one palm and it is face down. then every

  Rewrite the standard from for a conic section

Use the values a = 5, b = 0, c = 0, d = 4, e = –1, and f = –2 to rewrite the standard from for a conic section

  At what rate is his distance from second base changing

A baseball batter is running to first base at the rate of 30 ft/sec. When he has run halfway, at what rate is his distance from second base changing?

  Find the dimensions of the box with minimum surface area

the volume of an open rectangular box with a square base is 32 cubic inches. find the dimensions of the box with minimum surface area.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd