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Diseases D1. D2. and D3 cause symptom A with probabilities 0.5. 0.7, and 0.8. respectively. if 5% of a population have disease D1, 2% have disease D2, and 3.5% have disease D3, what percent of the population have symptom A? Assume that the only possible causes of symptom A are D1, D2, and Di and that no one carries more than one of these three diseases.
If the population mean was $1047 in the previous year, does the evidence suggest that expenditure this year has significantly changed?
If 36 women are selected at random, find the mean, and standard deviation, of the population of sample means. Suppose that the sampling is done without replacement and use a finite population correction factor.
A random sample of 300 female members of health clubs in Los Angeles showed that they spend, on average, 4.5 hours per week doing physical exercise.
an automated blood-pressure machine correctly classifies 87 of hypertensives as having hypertension high blood pressure
What is the difference in Electronegativity between these pairs of elements? Which paris would form ionic, polar covalent, or non covalent bonds?
According to the dietary guidelines from the United States Department of Agriculture, a healthful diet consists of fruits, vegetables, whole grains, lean protein, and dairy.
the averagemean of time waiting for a heart transplant is 132 days and. the standard deviation is 19.8 days.what is the
Draw the scatter diagram. Does it appear that x and y are related? If so, how? Test to determine whether there is evidence of a linear relationship
Here are fifty observations on the weight of tea bags. Calculate the Standard Deviation and Variance.
Assume the data for the three groups are independent and the data are approximately Normal. The P-value is less than 0.01. The correct conclusion is that
The table shows statistical information on recorded live births in the Republic of South Africa in different years.
Suppose that 1% of all the students seeking treatment at the school infirmary have mono. Of the students who do have mono, 90% complain of a sore throat. Of the students who do not have mono, 30% also have sore throats.
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