Question

STATISTICS and PROBABILITY (SUMMATIVE ASSESSMENT #4)
A. Determine the sample size, given the following data:
1. s = 6, E = 0.5, confidence level= 95%
2. s = 5, E =0.04, confidence level=98%
3. s= 8, E = 3, confidence level=999
4. s= 10, E = 5, confidence level=95%
5. s= 7, E = 2. confidence level= 99%
B. Solve the following problems.
A researcher wants to estimate the average number of children with congenital heart disease who are
between the ages of 1-5 years old. How many children should be enrolled in this study, if the researcher plans on
using a 95% confidence level and wants a margin of error of 0.5 and standard deviation 4?
PERFORMANCE TASK #4
A researcher conducts a diagnostic examination iu 20 students. The following are the interpretation of the
diagnostic examination.
1. James got a score which is 60% higher than those who took the diagnostic test.
2. Rowena has a percentile rank of 90.​

Answer 1

Answer:

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