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60% of my students are females and 40% males. The average height for females is 5.8 and average for males is 6.
Find the average height of the class.
What proportion of time is the machine down due to a type 1 failure? What proportion of time is the machine down due to a type 2 failure? What proportion of time is it up?
The standard deviation of 0.01 inches. What is the probability that a randomly selected pencil will be less than 0.285 inches?
you want to estimate the proportion of defective products that result from a new computer-aided design process that
Find the probability that he will answer all 10 questions correctly.
Write a sentence showing how the outcome of the hypothesis test and the measure of effect size would appear in a research report.
How would you use the "margin of error" in estimating the percentage of all adults who think that Venetian blinds are the hardest to clean?
The mean age of a sample of 60 students from a class was found out to be 25.3 years. The variance in population age was 16 years.
find solutions to the following problem. be sure to include all relevant information including hypothesis critical
the iqs of 600 applicants of a certain college are approximately normally distributed with a mean of 115 and a standard
a two-sample t test is going to be carried out where it is assumed that the population variances are unknown but
Findout the margin of error for this survey if we want a 99 percent confidence in our estimate of the percent of adults over 50 who take vitamin supplements.
Find the 90% confidence interval fo the mean. Does the confidence interval interpretation agree with the hypothesis testing results? Explain.
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