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Bruce treadmill test is utilized to assess exercise capacity in children and adults. Cumming, Everatt and hastman(1978) studied distribution of bruce tread mill test endurance times in normal children. Mean endurance time for a sample of 36 girls 4-5 years old was 9.5 minutes with standard deviation of 1.86 minutes. If suppose that these are true population mean and standard deviation and if we also suppose that the patience times follow normal distribution, determine the probability of observing a 4 year old girl with the endurance of less than 7 minutes? 36 values given here are based on summary statistics from research by cumming. Do you think that these data are normally distributed? Describe your answer.
5.3
8.8
10.6
6.5
10.8
7
8.9
11
7.2
9
11.2
7.5
12.1
8
12.3
11.5
9.5
6
9.8
12.2
8.2
12.4
8.5
10
12.7
11.3
Any analysis required to check the required conditions (note that if you find that you cannot meet the required conditions for the test you expected to do, you must use the appropriate non-parametric test)
Compute the sample variance and the sample standard deviation for these data (to 2 decimals).
Is there a significant difference the four testing conditions?
There were 25 subjects included in each of the combinations of gender and smoking status. One of the variables measured was the heart rate after six minutes of exercise. A two-way ANOVA is performed with the resulting ANOVA table given below
Give all steps of a test of the hypothesis that the corresponding population proportions are equal.
The probability that the daily demand at this store is at least one and at most three is:
What is the probability that all three students pick exactly the same card?
Carry out suitable multiple comparison procedure to determine the source of the difference.
Formulate the hypotheses that can be used to determine whether union membership increased in 2006.
Using part(a), explain to investor differences between distribution of performance figures for the 2 kinds of stock funds.
Compute the range and interquartile range
Which of the following would produce a new confidence interval with smaller width based on these same data and produce a new confidence interval
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