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a professor needs to select a volunteer for a project .which of the following would not be an example of a simple random sample ?A)he chooses a number between 00 and 99 . the student whose phone number has the last two digits closest to the one the professor has chosen is selected .B)he chooses that individual whose name is first in alphabetical order C)he puts all student names in a bowl , mixes them up , and selects one . D)he has each student select a number between 0 and 99 and write it down . he then selects the student whose number is closest to the last two digits of his social security number.
The significance level of a statistical test is equal to the probability that the null hypothesis is true.
In an ABCNews.com nationwide poll done in 2001, the proportion of respondents who thought that it should be illegal to use a hand held cell phone while driving a car was 69 %. The poll's sample was 1027.
A senior accounting major at Midsouth State University has job offers from four CPA firms. To explore the offers further, she asked a sample of recent trainees how many months each worked for the firm before receiving a raise in salary.
Let p represent the population proportion of all numbers in the corporate file that have a first nonzero digit of 1. Test the claim that p is less than 0.301 by using What is the P-value of the test statistic?
Your company ships a lot of packages needing quick delivery and short notice. In the past, you have used Speedy Air Delivery Service, but you are beginning to receive complaints from customers who say they are not receiving their packages on time.
Reflect on radical expressions and their applications, and then consider how you might apply radical expressions to your daily life. Explain this application,
The mean and variance of the total amount of money that is collected from a car that crosses the bridge are:
What is the 95% confidence interval for the proportion of smokers in the population (to 4 decimals)?
For a population with a mean of (u)=50 and a standard deviation of (o)=10, how much error on average would you expect between the sample mean (M) and the population mean for the following samples
If you take a random sample of 100 adults, what's the probability that less than 50% of the adults sampled prefer coffee? Write answer in decimals using 4 digits precision.
If you have n independent flips of a coin with probability p of landing heads. And a changeover occurs whenever an outcome differs from the one preceding it.
The random variable "x" is the number of times he wins in 20 attempts at the game. Find the mean and std dev. for this experiment.
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