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Oxana [17]
3 years ago
13

Researchers used 7 red and 7 black playing cards to randomly assign 14 volunteer males with high blood pressure to one of the tw

o diets for four weeks. The two diets are: a fish oil diet and a standard oil diet. The reductions in diastolic blood pressure were measured in mmHg. Label the fish oil diet group 1 and the standard oil diet 2. Now since the measurements are the reductions in blood pressure for each man, it is of interest to know whether the mean reduction is zero for each group. For the regular oil diet group do the following:
(a) Compute the average and standard deviation. What are the degrees of freedom associated with the sample standard deviation, s2?
(b) Compute the standard error for the average from this group, SE(Y2).
(c) Construct a 95% confidence interval for Mu2.
(d) For the hypothesis that Mu2 is zero, compute the t-test statistic Y2/SE(Y2). Find the two-sided P-value as the proportion of values from the appropriate t-distribution farther from 0 than this value.
Mathematics
1 answer:
Setler [38]3 years ago
4 0

Answer:

hiii

Explanation:

very difficult...

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Over a 12 hour period from 8 pm to 8 am the tempeture fell a steady rate 8°F to 16°F if the temperature fell at the same rate ev
icang [17]
What we know:
12 hour period from 8pm to 8am
temperature dropped from 8°F to 16°F from 8pm to 8am

We need to find temperature at 4 am.

We can start by setting up points:
8pm is are starting point with 8°F, we can express it as (0,8), 0 represents initial time from 0 to 12 hour span.
8am is the ending point with 16°F, we can express it as (12,16), 12 represents the end time of 0 to 12 hours span.
We will use these points to find slope.
slope=m=(16-8)/(12-0)=8/12=2/3

Now, we can set up an expression to find any temperature at a specific time.  Aslo, x represents the hours not the the specific time of 4am. We will use 8 since 4am is the 8th hour of the 12 hour span. Using slope of 2/3 and the y intercept of (0,8) since we were already at 8°F at the initial time of 0 we have the function:

f(x)=2/3x+8 

f(8)=2/3(8)+8= 40/3≈13.3°
7 0
3 years ago
- 3 (n-3)-5<br> simplify the expression using distributive property please rnnn
Tju [1.3M]
Distribute the “-3” to both n&-3 —> -3n+9 then your left with -5 and subtract 9-5

-3n+4

Hope this helps:)
4 0
3 years ago
Marianna Martinez sells copy paper to local schools. She earns a 13 percent straight commission on all sales . In November her s
faltersainse [42]

Answer:

13%=0.13

28540*0.13=3710.2

8 0
3 years ago
B.<br> f(x) = -1x - 4; Find f(-3)
Margaret [11]

Answer:

f(-3) = -1

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Algebra I</u>

  • Functions
  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

f(x) = -1x - 4

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em> [Function f(x)]:                                                                          f(-3) = -1(-3) - 4
  2. Multiply:                                                                                                             f(-3) = 3 - 4
  3. Subtract:                                                                                                            f(-3) = -1
4 0
3 years ago
A shoe store marks up its merchandise by 8%. What was the selling price of a pair of shoes whose wholesale price is $24.50? Show
Alika [10]

Answer:

Result: $26.46

Steps:

$24.50 (increase) + 8% = $26.46

24.50 x (1 + 8%) = 24.50 x (1 + 0.08) = 26.46

I'm truly sorry if my math is incorrect.

Bye, have a great day/night  :)

4 0
3 years ago
Read 2 more answers
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