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Answer the following:
i) What does it mean to say that x = 17 have a standard score of -0.3?
ii) What does it mean to say that particular value of x has a z-score of +5.7?
iii) In general, determine the standard score a measure of?
Social psychologist is interested in finding whether there is relationship between education level of parents and number of children they have. Accordingly, a survey is taken, and following results are obtained:
Education Level
Number of Children
College Education
High School Education Only
Total
Two or Less
53
22
75
More than Two
37
38
90
60
150
To find out the estimate of between and within treatments.Samples were selected from 3 populations. The data obtained follow.
Determine odds student gets more than 14 questions correct? Determine the odds student gets exactly 12 questions correct?
Since 38% is less than 40%, does this mean that immediate production cutbacks are needed or can this difference of 2 percentage points be attributed to sampling?
Calculate the mean absolute deviation based on the 2-day moving average. You can have a forecast and an actual temperature.
Use the permutations rule to determine the total number of different ways the winners can be drawn.
Mean = 14.2, s² = 5.92 and sum of X squared EX² = 2941.60. What can be concluded about age differences in problem solving ability?
Which measures of central tendency will always have but one (1) value for a set data?
Exam is given to 20 randomly chosen students and their average length of t time needed to finish exam was 54 minutes with standard deviation of 5.99 minutes. Test instructor's claim at the 0.05 level of significance.
Prepare the confidence interval of 95% for the welders' proportion that graduated in the school of welding.
For a sample with standard deviation of 10, a score of X = 44 corresponds to z-score of 0.50. Based on this info, determine the sample mean?
What is the probability that the cereal would be high fiber? In other words, what is P (high fiber)?
Find the confidence interval for the mean price, μ, of all dealer sticker prices of new cars: for a confidence level of 90% in thousands of dollars:
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