The average tree planter earns $95/day with a standard deviation of $20. The distribution is normal. a) Most students won't accept a job that pays less than $70/day. What percentage of the...

The average tree planter earns $95/day with a standard deviation of $20. The distribution is normal.

The average tree planter earns $95/day with a standard deviation of $20. The distribution is normal. a) Most students won't accept a job that pays less than $70/day. What percentage of the...

the answer is not 0.117

In a survey of consumers aged 12 and older, respondents were asked how many cell phones were in use by the household. (No two respondents were from the same household.) Among the respondents, 218...

A clinical trial was conducted using a new method designed to increase the probability of conceiving a boy. As of this writing, 300300 babies were born to parents using the new method, and 242242...

When testing gas pumps for accuracy, fuel-quality enforcement specialists tested pumps and found that 13461346 of them were not pumping accurately (within 3.3 oz when 5 gal is pumped), and 56195619...

n a study of 420,115 cell phone users, 148 subjects developed cancer of the brain or nervous system. Test the claim of a somewhat common belief that such cancers are affected by cell phone use. That...

the numbers I was given was 40 44 35 49 35 43 35 36 39 37 41 41 48 52 37 45 40 36 35 50 42 51 33 34 51 39 I'm a senior this year and I'm trying to graduate with my class because I was...

When a van is randomly selected, it is found to have a tire pressure of 30 psi is the data discrete or continuous?

A probability problem

Use the given confidence interval to find the margin of error and the sample proportion.

Assume that adults have IQ scores that are normally distributed with a mean of 105 and a standard deviation 20. Find P 15, which is the IQ score separating the bottom 15% from the top 85%.

6. Independent random samples were drawn from two normal populations assumed to have the approximately the same standard deviation, resulting in the following summary statistics: n1 = 25,...

If in the Normality test(shapiro test) we have some values higher than the treshold(0.05) and some lower, how can we decide if the distribution is normal and then whether to run a parametric or non...

I need to know the answer dammit

When starting a survey using male and female participants should the number be equal?

The probability a person is left-handed is 0.14. In a group of 45 people, what is the probability that exactly five are left-handed? Binomial probabilities?

A 0.05 significance level is used for a hypothesis test of the claim that when parents use a particular method of gender selection, the proportion of baby girls is greater than 0.5. Assume that sample...

A 0.05 significance level is used for a hypothesis test of the claim that when parents use a particular method of gender selection, the proportion of baby girls is greater than 0.5. Assume that sample...

A 0.05 significance level is used for a hypothesis test of the claim that when parents use a particular method of gender selection, the proportion of baby girls is greater than 0.5. Assume that sample...

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