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The probability of recovery for a certain disease is 0.65 or 65%. If 50 people are stricken, what is the probability that
a. 25 or more will recover?
b. Fewer than 5 will recover? using normal approximation
Estimated sales resulting from a $15,000 investment in inventory and an advertising budget of $10,000. Interpret b1 and b2 in this estimated regression equation.
Reading highway signs is not always easy, especially if your vision is imperfect. Vision in general tends to deteriorate with age. Two researchers conducted a study to determine if the distance at which a standard highway sign could be recognized ..
A statistical analysis of 1000 long distance telephone calls made from the headquarters of the Bricks and Clicks Computer Corporation indicates that the length of these calls is normally distributed with u=240 seconds and sigma = 40 seconds.
It is not unusual for a battery to have life span that is more than 2470 hours as the z-score is within 2 standard deviations of mean.
Estimate with 95% confidence the mean reduction in time it takes for someone who has taken the sleeping pill to fall asleep.
What is the probability that an individual shopper spends between $17.25 and $21.60 on impulse buys?
A nutritionist wants to estimate the mean amount of cholesterol in a certain variety of chicken eggs. She wants to be within 14 mg. with 99% confidence.
Write down the name of 4 parts of the regression equation.
Write Cumulative distribution function.Find the cumulative distribution function F(x).
To find the necessary sample size to achieve the given level of accuracy of prediction.
On a particular day during the most recent golf tournament, the organizer placed the whole (pin) in 0 back left corner of the green. 64 golfers played the hole with the new placement on that day. Find out the probability of the sample average numb..
The instructor plans to draw a histogram of the 1,100 sample proportions. What will be the approximate mean for the 1,100 sample proportions?
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