1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nastasia [14]
3 years ago
12

A large clinical trial was designed to determine whether a certain vitamin improves the general health of adults. The investigat

ors first identified 85 variables that measure various aspects of the general health of adults. Because each adult in the clinical trial was to serve as his or her own control, the 85 variables were measured for each adult, both before taking the vitamin and after taking the vitamin for three months. The investigators then performed 85 matched-pair t-tests, one for each variable. They found statistically significant results at the 0.05 level in 2 of the variables, both in the direction of improved general health. Which of the following should the investigators conclude?
(A) There is evidence that the vitamin improves the health of adults because 2 of the 85 tests were statistically significant.(B) There is evidence that the vitamin improves the health of adults because in clinical trials investigators typically underestimate the proportion of the population that is helped by a vitamin.(C) There is insufficient evidence that the vitamin improves the health of adults because at the 0.05 significance level, one could easily get statistically significant results in 2 out of 85 tests just due to chance variability.(D) There is insufficient evidence that the vitamin improves the health of adults because the sample size of 85 is not large enough to draw a conclusion.(E) No conclusion can be drawn because an even number of variables is needed for a matched-pairs design.
Health
1 answer:
jeka57 [31]3 years ago
8 0

Answer:

(C) There is insufficient evidence that the vitamin improves the health of adults because at the 0.05 significance level, one could easily get statistically significant results in 2 out of 85 tests just due to chance variability.

Explanation:

T- tests is statistical tool that is used to determine if between the mean values of two groups there is a significant difference present.

It is used to test the hypothesis of an assumption that can be applied to a particular set or group of people.

In the question above, Option C is the valid conclusion because from the t-test carried out a significant level of 0.05 occured in two variables out of 85. Therefore there is insufficient evidence to prove that vitamin C improves the health of Adults.

You might be interested in
The best prevention aganist bad breath​
Kaylis [27]

Answer:

dental hygiene

Explanation:

3 0
2 years ago
Read 2 more answers
Why Should one study<br>cell injury<br>​
frutty [35]

Answer:

s.jhfvsjbhvf.jhsbfjhewbfewfsfbwkjvwesjbc

Explanation:

5 0
3 years ago
Read 2 more answers
Step 1: Determine your maximum heart rate. M = 220 - [your age] M = 220 - ________ = ________
svet-max [94.6K]
1. M = 220 - 19(my age) = 201
2. T = 0.70(201) = 140.7
5 0
3 years ago
Goals that take days, weeks, or months to achieve; help achieve long-term goals
sp2606 [1]
I would say true because that teaches you to make goals that take longer to achieve.
7 0
3 years ago
STIs can lead to other health problems if untreated. Which of the following is a common STI that may have no symptoms, but can l
hram777 [196]
Chlamydia, if left untreated, it leads to the vaginal area unable to fertilize
3 0
3 years ago
Read 2 more answers
Other questions:
  • Periosteum is a thin sheet of outer tissue that
    11·2 answers
  • I need help ASAP can some pls help me out
    7·1 answer
  • Describe what happened to the blood ph when the metabolic rate was increased to 80 kcal/hr. what body system was compensating? h
    7·1 answer
  • In order to avoid pain and aches after infrequent exercise, what should you do?
    15·2 answers
  • The acronym for an increasingly common disorder of the large intestine presenting with cramping pain gas and changes in bowel he
    10·1 answer
  • When breathing into the mouth of an infant during CPR, you should cover their mouth and nose with your mouth
    9·1 answer
  • A client arrives at a health clinic stating, "I am here to have my tuberculin skin test read." The nurse notes that there is a 7
    15·1 answer
  • Two internal factors that may cause a person to become bulimic
    9·1 answer
  • How do calories and activities affect weight management?
    11·1 answer
  • Which of the following are components of a healthy, loving relationship?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!