Maths Test \"2 (Tutorial #8) HBM 1003 A. Definitions Describe the difference bet
ID: 2928506 • Letter: M
Question
Maths Test "2 (Tutorial #8) HBM 1003 A. Definitions Describe the difference between mean and median? (2) What does standard deviation (SD) represent ? (1) 3 What is the equation for calculating the standard error of the mean (SEM?( B. Calculations of Descriptive Statistics 4. White Blood Counts: Listed below are white blood cell counts (1000 cells/ul) from males and females (from a Data set "Body Data"). Standard Deviations (s) of the two samples are calculated and given below. Calculate a) the Mean (). b) Median, c) sample size (n). d) variance (s'), e) Coefficient of variation (CV) for each of the 2 groups of data. Io marks Female 8.0 6.4 Male 4.9 7.s 6.1 5.7 4.1 5.6 8.3 5.1 9. 6.1 5.7 5.4 Female o Male 1.57 1.53 Median CV f) How would you interpret Mean and Median with respect to the two sets of data? g) Which group has greater variability in the values? How do you know this? ge 1Explanation / Answer
Solution:-
7)
z = 1.74, p > 0.40
a)
Two-Tailed Test
State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.
Null hypothesis: P = 0.40
Alternative hypothesis: P 0.40
Note that these hypotheses constitute a two-tailed test. The null hypothesis will be rejected if the sample proportion is too big or if it is too small.
Left tailed test
State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.
Null hypothesis: P > 0.40
Alternative hypothesis: P < 0.40
Note that these hypotheses constitute a one-tailed test.
Right Tailed test
State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.
Null hypothesis: P < 0.40
Alternative hypothesis: P > 0.40
Note that these hypotheses constitute a one-tailed test.
b)
p value for Two tailed = 0.0409 + 0.0409 = 0.818
P-value for one tailed test = 0.0409
c) We fail to reject the null hypothesis because p-value(0.0409) is greater than the significance level(0.01).