Time period Time-period score Annual incidence 1970–1974 1 240.4 1975–1979 2 243.1 1980–1984 3 256.7 1985–1989 4 315.9 1990–1994 371.8 Мean 3.0 285.6 sd 1.58 57.1 N 5

Calculate the F statistic

A blog noted that​ "there has been increasing anecdotal evidence that vitamin C may still be useful as an anticancer medicine if used in high concentrations and given directly into the vein​ (intravenously)." Use this information to answer the questions below.       Question content area bottom Part 1 Explain what it means that there is​ "increasing anecdotal​ evidence" that Vitamin C may be a useful anticancer medicine.     A. There is no evidence that shows Vitamin C may be a useful anticancer medicine.   B. There is scientific evidence that Vitamin C is a​ non-useful anticancer medicine.   C. There is an increase in rigorous or scientific analysis that shows Vitamin C may be a useful anticancer medicine.   D. There is an increase in observations or personal experiences that shows Vitamin C may be a useful anticancer medicine. Part 2 How does anecdotal evidence contrast with scientific​ evidence?     A. They are stories about individual cases.…

Lost-time accidents occur in a company at a mean rate of 0.3 per day. Using the data  above, what is the probability that the number of lost-time accidents occurring over a period of 7 days will be more than 3?

proposed research question: Does implementing trauma-informed education in elementary schools affect the rate of student behavior referrals? Based on the proposed research question, state a two-tailed hypothesis.

Types of samplingIn each of the following exercises, identify the type of sampling to which the premise refers: random, systematic, convenience, stratified, by cluster:a) The sample is homogeneous and results are as accurate as those of a simple random sampling, but with a smaller sample size.b) It tends to provide better results when the elements within the clusters are not similar.c) A professor conducting research at a university can use student volunteers to form a sample, simply because they are available to her.

If arrivals occur at a mean rate of 2.6 events per minute the exponential probability of waiting more than 1.5 minutes for the next arrival is is a .0202 or .0122 or .0535 or .2564

Data originally from DASL http://lib.stat.cmu.edu/DASL/Datafiles/CancerSurvival.html (Links to an external site.). Some bronchial cancer patients had the following survival times (in days) after receiving a certain treatment: 20, 37, 63, 64, 72, 81, 138, 151, 155, 166, 166, 223, 245, 246, 450, 459.  (The second instance of “166” is not a mistake.) Do these numbers suggest that the average survival time, for all bronchial cancer patients who receive that treatment, is significantly different from 200 days? CANCER SURVIVAL Report an appropriate one-sample hypothesis test and use a 10% significance level. For Step 4 of the six-step process that was taught in this class, choose the BEST option to complete the following sentence: We assume that the sample of subjects is a SRS and we assume that the population of observations has no outliers ... and is Normally distributed. and is without a doubt bell-shaped. and is Uniformly distributed. (nothing needs to go here because the sample…

An 86% confidence interval for a correlation

What is the odds ratio for a study with a logistic regression coefficient -0.2524?     0.78     1.00     -0.78     -2524