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About 3% of the population has a particular genetic mutation. 500 people are randomly selected.
Find the mean for the number of people with the genetic mutation in such groups of 500.
Determine and plot the probability mass function and probability distribution function of the contract award amount (in millions of dollars).
Suppose the population standard deviation is unknown. If 71% of all sample means are greater than 49 hours and the population mean is still 50.4 hours, what is the value of the population standard deviation?
q1. find the area under the standard normal curve from z 0 to z 0.74.q2. find the area under the standard normal curve
a simple random sample of 5 months of sales data provided the following information month 1 2 3 4 5 units sold 94 100
If one item is chosen at random, determine these probabilities. It is a TV
Determine 95% confidence interval evaluate for average number of years served by all Supreme Court justices?
An investigation of past consumer surveys done by a company reveals that 2/3 of customers contacted respond to the survey. The marketing manager wants to do a new survey and plans to contact 198 customers
The mean weight for a certain type of fish is known to be 28.0 ounces with a standard deviation of 2.5 ounces . A game warden catches and weighs 30 fish from a certqin pond to check if they are larger than the mean stated above.
Calculate and interpret the appropriate statistical test to determine the relationship between the following two variables. Use the five-step model of hypothesis testing to draw conclusions at the .05 level of significance
You just saw an ad on television that states the majority of the population would vote to make smoking illegal. The poll that is referenced shows 53% of those asked supported making smoking illegal.
Scores on test form normal distribution with mean of µ = 150 and a standard deviation of σ = 25. Mean for sample is M = 158. Compute test statistics (z score) for sample.
twenty-two volunteers at a cold research institute caught a cold after having been exposed to various cold viruses. a
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