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
uranmaximum [27]
3 years ago
12

A professor teaches a certain section of material using a lot of examples with sports and cars to illustrate. He is concerned th

at this may have biased his instruction to favor male students. To test this, he measures exam grades from this section of material among women (n = 10) and men (n = 10). The mean score in the male group was 84 ± 4.0 (M ± SD); in the female group, it was 78 ± 8.0 (M ± SD) points. If the null hypothesis is that there is no difference in exam scores, then test the null hypothesis at a 0.05 level of significance.
A.Exam scores were significantly higher in the male group, t(18) = 2.83, p < .05B.Exam scores were the same between groups, t(18) = 2.12, p > .05.C.Exam scores were significantly higher in the male group, t(18) = 2.12, p < .05.D.Exam scores were the same between groups, t(18) = 1.00, p > .05.
Mathematics
1 answer:
ser-zykov [4K]3 years ago
4 0

Answer:

Step-by-step explanation:

Let X represent for males and Y for females

Given that

Group   Group One     Group Two  

Mean 84.00          78.00

SD        4.00                    8.00

SEM 1.26             2.53

N            10              10  

SEM is calculated as \frac{s}{\sqrt{n} } for each group

H_0: \bar x = \bar y\\H_a: \bar x \neq \bar y

(Two tailed test at 5% significance level)

t = 2.1213\\  df = 18\\  standard error of difference = 2.828\\p=0.0480

Since p <0.05 we reject H0 and there is significant difference between the groups.

A.Exam scores were significantly higher in the male group, t(18) = 2.83, p < .05B

You might be interested in
1) For question 1, use the figure below. a) Are the following polygons similar? Explain. (2 pts) Yes or No b) Assume the polygon
Delvig [45]

Answer: a) Yes b) Polygon ABCD ~ Polygon EFGH c) JKLM is 3x bigger than polygon ABCD

Step-by-step explanation:

(for part c)

JM= 36

AD= 12

36/12= 3

JKLM is 3x bigger than polygon ABCD

3 0
3 years ago
Yuhhhhhhhhhhhhhhhh I need help
baherus [9]

Answer:

JUST DO 3.142 X 10

ANSWER: 31.42 IN

Step-by-step explanation:

<em><u>Please mark as brainliest</u></em>

Have a great day, be safe and healthy

Thank u  

XD

4 0
2 years ago
There is a 25% chance that Dane will make a three-point shot during a basketball game. A random-number generator generated 10 se
Gelneren [198K]

Answer:

the 25% chance is wrong, it is actually 20%

Step-by-step explanation:

Based on the table of trials shown in the picture, it seems that the 25% chance is wrong. In the table, there are 10 trials and each one has 5 numbers generated, meaning there are a total of 50 numbers generated. Out of these 50 numbers, only 10 are the number 3. Since 3 is the only number that represents a three-point shot, that would make it a 20% (10 / 50) chance that Dane makes a three-point shot in a basketball game.

3 0
3 years ago
Find the volume of the cylinder.
VARVARA [1.3K]

Answer:

The answer to the test is 1. B 2.C 3.B 4.A and this is one is C for the answer.

4 0
2 years ago
Using the dimensions of a new scale drawing created using a scale factor of 0.15, find the dimensions of the original rectangle.
adoni [48]

Answer:

Width: 15.8 ft

Length: 32ft

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • The sum of two numbers is 436. The larger number is 3 times the smaller number. What are the numbers?
    10·1 answer
  • Please solve for x on numbers 14-18!!
    15·1 answer
  • What is 3819 divided by 19
    7·2 answers
  • What is the measure in radians for the central angle of a circle whose radius is 9 cm and intercepted arc length is 7.2 cm? Ente
    5·2 answers
  • Find the difference. (4x 2 - 6x + 8) - (3x 2 - 6x + 2) x2 + 6 7x2 - 12x - 6 x2 + 12x + 6 x2 - 12x - 6
    9·1 answer
  • There are 12 cars contesting a race. The first three cars completing the race will be awarded prizes. In how many ways can the p
    7·1 answer
  • Red 13 Silver 34 Black 25 White 10 Blue 8
    13·2 answers
  • What are the coordinates of A after reflecting across the line x = 3?
    11·1 answer
  • Please help me I don’t understand this!
    15·1 answer
  • Kara earns 12 cent for each paper she delivers. If she delivers papers to 42 customers each day, how much does she earn in 1 wee
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!