A pharmaceutical company needs to know if its new cholesterol drug, Praxor, is effective at lowering cholesterol levels. It believes that people who take Praxor will average a greater decrease in cholesterol level than people taking a placebo. After the experiment is complete, the researchers find that the 44 participants in the treatment group lowered their cholesterol levels by a mean of 18.7 points with a standard deviation of 3.3 points. The 39 participants in the control group lowered their cholesterol levels by a mean of 18.1 points with a standard deviation of 2.1 points. Assume that the population variances are not equal and test the company's claim at the 0.02 level. Let the treatment group be Population 1 and let the control group be Population 2. Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places. Answer Keypad Keyboard Shortcuts Tables

Q: (42x² – 33) ÷ (7.x + 7)

A: We have to solve                           42x2-33÷7x+7

Q: 4. 81-x2² difference of Squ

A:

Q: 11/6 is the wrong answer

A:

Q: -7/27+ 13/27

A: Calculation:Simplify the given expression as follows,

Q: 3-5(4x + 7)

A:

Q: 1 V91 - 36x +37

A:

Q: 5(18)

A: To find5(18)

Q: Is 18* 1/3= greater then 1/3 ?

A: Given : We have to check whether 18*1/3 is greater than 1/3

Q: 1/3+6/10 explain why the answer is 14/15?

A:

Q: 3-11

A: Topic- basic maths

Q: 6. 3V54 – 2/2 + 7/-16

A: 3*543-223+7-1633*543=3*3.7797=11.33922*23=2*1.2599=2.51987*-163=7*-2.5198=-17.6386

Q: Find the value of n(An B) if n(A) = 10, n(B) = 13, and n(A U B) = 18. n(An B) = (Type a whole…

A:

Q: (55-3)(13.3)

A: Answer and explanation is given below

Q: 2 (x-3) -1= 3°(x to ) :

A: Simply do the algebraically calculation and determine x.

Q: u さx Jx (x+6) 18Evaluate: fo

A: We need to evaluate : ∫0∞4xx+6dx

Q: 10/21 multiply 14/15=

A: The objective of the question is to find the product of two fractions, 10/21 and 14/15.

Q: Give an example of a situation in which you might need to calculate 4!. Show all steps.

A: Solution: Factorial: It is defined as The factorial function (symbol: !) says to multiply all whole…

Q: 1/12 - 7/6 divide 5/8 times 1 1/2

A:

Q: arg ((1+ i.)^5)

A:

Q: 2. Factor x from ax + bx

A: We have to factor x from ax+bx.

Q: 20/√3

A: Given : 20/√3              Because √3 = 1.73205.....              We taka approximate value of √3 =…

Q: 9/2 multipi 24/1

A: 92 × 241= 9×242