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The probability that an individual is left-handed is 0.13. (Hint: this is the small p for binomial distribution)
In a class of 70 students, (i.e. N = 70 in this case) what is the mean and standard deviation of the number of left-handers in the class?
Suppose that the number of left-handers is a binomial random variable. (Refer to the formula for mean and standard deviation for binomial prob. Distribution)
The lifetime of a 2-volt non-rechargeable battery in constant use has a Normal distribution with a mean of 516 hours and a standard deviation of 20 hours. The proportion of batteries with lifetimes exceeding 520 hours is approximately.
what percent of the total number of seeds germinated?
We are interested in comparing the proportions of males and females who think earning a large salary is very important to them. I surveyed 200 of each gender and recorded their answers to the question as yes or no.
If a technical breakthrough occurred that raised the profit per unit of X 1 to $3, would this affect the optimal solution?
Find the probability of getting a head and rolling a six
The sampling distribution of the average score and Suppose x' is your average pay for the 100 weeks. Then x' has approximately
What is the equation for this regression model?
An experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield. There were 64 plots, and each of the 16 factor combinations was randomly assigned to 4 plots
Problems on Sampling Variability and Standard Error and Confidence Intervals
A scientist examined the effect of temperature and catalyst on the yield of a reaction. He ran the experiment at both 150° and 200°C with two types of catalyst.
A permutation resample for a two-sample test
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
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