Search & Filtering
If the ANOVA value (F-value) is 2.12 and the critical value are ±1.96, what is the appropriate decision?
A study claims that on average, male high school students spend at least 3.39 hours a day playing video games with a standard deviation of 2.05 hours. A random sample of 30 teenagers were surveyed and the results showed that these teenagers append 4.12 hours a day playing video games. Calculate the probability of getting a smaller average time.
A claim states that the mean income of families in a certain city is at least 18,500. What kind of hypothesis does the claim state?
The paper “Effect of long-term blood pressure control on salt sensitivity” [Journal of
Medicine (1997) 28:147–156] describes a study evaluating salt sensitivity (SENS) after a period of
antihypertensive treatment. Ten hypertensive patients (diastolic blood pressure between 90 and
115 mmHg) were studied after at least 18 months on antihypertensive treatment. SENS readings,
which were obtained before and after the patients were placed on an antihypertensive treatment,
are given here:
Patient 1 2 3 4 5 6 7 8 9 10
Before treatment 22.86 7.74 15.49 9.97 1.44 9.39 11.40 1.86 6.71 6.42
After treatment 6.11 4.02 8.04 3.29 0.77 6.99 10.19 2.09 11.40 10.70
a. Is there significant evidence that the mean SENS value decreased after the patient
received antihypertensive treatment?
b. Estimate the size of the change in the mean SENS value.
c. Do the conditions required for using the t procedures appear to be valid for these
data? Justify your answer
Supposed three coins are tossed. Let X be the random variable representing the number of heads occur. Construct a table that shows the sample space and values of the random variable X
You collected data on incident of burglaries in 112 suburbs drawn from a number of major cities around the country. When plotting these on a normal (bell curve ) you find that of these 108 fall with in +2z and -2z of the mid point (mean) but 3 fall above 2z and one falls below 2z OUTLINE what your conclusion would be regarding the statistics drawn , with specific reference to the four suburbs that fall outside of 2z
find the value of x if A = [[x, 2], [4, 3]] and A ^ - 1 = [[- 1/2, 1/3], [2/3, 0]]
1. Why is it important to identify first and develop your topic in conducting a research?
2. Why is it important to do a preliminary search for information before you start to conduct a social research?
3. What is the important of Proofreading in conducting a social research?
Reflect on the concept of composite and inverse functions. What concepts (only the names) did you need to accommodate these concepts in your mind? What are the simplest composite and inverse functions you can imagine? In your day to day, is there any occurring fact that can be interpreted as composite and inverse functions? What strategy are you using to get the graph of composite and inverse functions?
The principal of tala senior highschool claims that the students in his school have above average intellegence. A random sample of 30 students IQ scores have a mean score of 113. The mean population IQ is 100 with a standard deviation of 15. Is there an evidence to support his claim?
#339914 on Dec 2023