Someone help?? :(<br><br> write down the answers

Methods of statistics show that if a vegetarian diet had no effect on blood pressure, there would be less than 1 chance in 100 o

Andreas93 [3]

Answer: hi your question is incomplete below is the complete question

answer:

The result has a statistical significance because from the results obtained from the sample of people whom followed vegetarian diet and the people whom followed non-vegetarian diet we can see the different effects on blood pressure.

The result has a practical significance because the large difference in mean values.

Step-by-step explanation:

Sample size = 85 followed a vegetarian diet

Period = 4 months,

Mean systolic blood pressure= 124 mmHg

Sample size = 75 followed non-vegetarian diet

Period = 4 months

Mean systolic Bp = 138 mmHg

Reasons/explanations

Given that p -value < 0.01 we will reject the null hypothesis

The result has a statistical significance because from the results obtained from the sample of people whom followed vegetarian diet and the people whom followed non-vegetarian diet we can see the different effects on blood pressure.

The result has a practical significance because the large difference in mean values.

7 0

3 years ago

The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 60 o

krok68 [10]

Answer:

a) 99.7% of the widget weights lie between 45 and 75 ounces

b) 97.2% of the widget weights lie between 50 and 75 ounces

c) 84% of the widget weights lie above 55

Step-by-step explanation:

The Empirical Rule states that:

50% of the values of a measure is above the mean, and the other 50% is below the mean.

99.7% of the values of a measure lie between 3 standard deviations of the mean.

95% of the values of a measure lie between 2 standard deviations of the mean.

68% of the values of a measure lie between 1 standard deviations of the mean.

In this problem, we have that: The widget weights have a mean of 60 ounces and a standard deviation of 5 ounces.

(a) 99.7% of the widget weights lie between

3 standard deviations of the mean, so:

60 - 3*5 = 60 + 3*5 = 45 and 75 ounces

(b) What percentage of the widget weights lie between 50 and 75 ounces?

We have to find the percentage that are below 75 and subtract by the percentage that are below 50. So

75 is 3 standard deviations above the mean. So 99.7% of the measures are below 75.

50 is 2 standard deviations below the mean. So only 5% of the measures that are below the mean are below 50.

So

99.7% - (50%)5% = 99.7% - 2.5% = 97.2%

(c) What percentage of the widget weights lie above 55?

55 is one standard deviation below the mean.

50% of the widget weights are above the mean.

Of the 50% that is below, 68% lie between one standard deviation(So from 55 to 60)

So

50% + 68%(50%) = 84%

3 0

3 years ago

HELP PLEASE

den301095 [7]

Answer:

number 3. is wrong you can reduce once more and it will equal 3/5. and number 4 would be 5/7.

Step-by-step explanation:

divide 12/20 by 2 on the top and bottom. you should get 6/10. you can divide that once more by 2 on the top and bottom and you should get 3/5. thats simplest form.

divide 25/35 by 5 on the top and bottom youll get 5/7. thats the simplest form.

hope this helped :)

6 0

3 years ago

If x + 3/ 3 = y + 2/ 2 , then x/ 3 = _______.

Naddik [55]

Answer:

The correct answer is y/2

Step-by-step explanation:

It is given that,

(x + 3)/ 3 = (y + 2)/ 2

<u>To find x/3</u>

(x + 3)/ 3 = (y + 2)/ 2

⇒ x/3 + 3/3 = (y + 2)/2

x/3 + 1 = (y + 2)/2

x/3 = (y + 2)/2 - 1

x/3 = (y + 2)/2 -2/2

x/3 = (y + 2 - 2)/2

x/3 = y/2

Therefore the correct answer is x/3 = y/2

4 0

3 years ago

If k = 13, what is the value of the expression 4k?

sineoko [7]

Answer:

52

Step-by-step explanation:

if k = 13

4k would be 4x13

4x13=52

3 0

3 years ago

Someone help?? :( write down the answers