Does having pets help reduce the rate of hypertension in adults? To attempt to answer this question, researchers asked a sample of 50 adults whether or not they have hypertension and how many pets they have (with options "none," "only one," or "more than one"). Of the 40 people without hypertension, 45% had only one pet. The same number of people with only one pet and more than one pet had hypertension. And of the 8 people with more than one pet, 75% did not have hypertension. a. Create a contingency table to display this data. b. What proportion the adults with at least one pet had hypertension? c. Are having hypertension and having no pets independent events for this sample? Justify your answer. d. List one possible confounding variable for this analysis and explain what impact it might have on the variables of interest.

-71/3 < -7x-8/3 lessthanequalto 2

Its really hard to follow, why did it become -1?

how to find the area to the left of -.96

Prove that the sum of two consecutive positive odd numbers less than ten gives an even number.?

Min 5x11 + 6x12 + 8x13 + 8x21 + 7x22 + 10x23s.t.x11+x12+x13<= 10000x21+x22+x23<=10000x11+x21>=6000x12+x22>=8000x13+x23>=5000x11, x12, x13, x21, x22, x23 >=0   Formulate and solve both the primal LP and the dual LP. Comment on the symmetry between the two.

What is the domain in range of {(5, 4), (6,3), (7,2)}

I think H1 here should be mean < 93

The daily low temperatures in some​ place, for seven consecutive days are given in the table below. Calculate the average daily low temperature for the​ seven-day period, rounded to the nearest integer.​  Day 1  -  31* Day 2 -   23* Day 3 -  -2* Day 4 -   -7* Day 5 -   -8* Day 6 -    -11* Day 7 -     -13*

What is the last digit in the number (31)(32)(33)...(3298)(3299)(3300)