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1. Find a peer-reviewed article that provides an example of a study that utilized a t-test for a single sample (on a topic of interest to you). Briefly describe the study and discuss its findings.2. Create a hypothesis about a topic you are interested in and then conduct a "mock" statistical test, writing out the eight steps used to apply a statistical test to your hypothesis.
Find the probability that if four subcomponents are randomly selected, all four have lengths that exceed 120 cm. normally distributed with mean =117cm and standard deviation of 5.2 cm
Mario, one of the owners of Mi Casa Front Porch Restaurant was looking to improve his planning for capacity. In order to do this, he wanted to understand the probability of people in each party coming to the restaurant. If the mean number of people p..
Barrows Textile Mills produces two types of cotton cloth-denim and corduroy. Corduroy is a heavier grade of cotton cloth and, as such, requires 7.5 pounds of raw cotton per yard, whereas denim requires 5 pounds of raw cotton per yard. A yard of..
1 the test averages for 40 students are listed below. use 8 classes not bins to construct a frequency distribution
The following data represents the marks of 11 students in group (A) : 14, 20, 17, 16, 18, 19, 15, 13, 2, 20, 14, 12 Compute the best central and dispersion measures. If the central and dispersion measures for the marks of the students in group (B) ar..
A sample of participants took part in a hearing experiment. Among other things, the absolute hearing threshold (in decibels) was measured for each participant. The measurements were as follows: 25, 22, 18, 35, 37, 34, 31, 27, 24, 21, 18, 39, 36, 33, ..
Can telling yourself during exercise that youre not as tired as you think you are help you work out longer and achieve more benefit from your exercise? Researchers from the University of Kent in Canterbury, England published results in the Jour..
A group of researchers runs a study in which they look at the relationship between music preferences and reading preferences. What statistical test should the researchers use on their data?
Correlation and the corresponding p-value - Calculate Spearman's correlation by hand - Give the hazard ratio and corresponding confidence interval for treatment
1) Twenty-eight small communities in Connecticut (population near 10,000 each) gave an average of x = 138.5 reported cases of larceny per year. Assume that σ is known to be 42.7 cases per year. (a) Find a 90% confidence interval for the population me..
What is a factor? How can the use of factors benefit a design?
In a study that examines the effect of a peer mentor on the heart rate of patients, what is the dependent variable? Peer mentoring, Emotional status, Heart rate or Patients.
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