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leonid [27]
3 years ago
15

A psychologist investigates the effect of instructions on the time required to solve a puzzle. 20 subjects are given the same pu

zzle and are randomly assigned to receive two different sets of instructions prior to the task. One group is told that the task is difficult and the other group is told that the task is easy. What test should be used to see if there are differences between the two groups with regards to the time it takes to solve the puzzle?
a. Z-Test
b. T-Test for One Sample
c. T-Test for Independent Samples
d. One Variable Chi Square
e. One-Way ANOVA
Mathematics
1 answer:
Lerok [7]3 years ago
8 0
B. t- test for one sample

hehehehehehhee
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Whats the answer to log x+2 (9x) = 2
vagabundo [1.1K]

Answer:

2/19

Step-by-step explanation:

x+2 (9x) = 2

x+18x=2

19x=2

19x/19=2/19

2/19

6 0
3 years ago
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HELP ME PLS LOVE U GUYS ,<322
EleoNora [17]

Answer:

384

Step-by-step explanation:

Triangle sides: 12x10/2. Then multiply by four to get all four sides.

Bottom: 12x12.

Add together, get 384.

4 0
3 years ago
Round this number to the nearest 100,000<br> 3,153,007
Bess [88]

Answer:

3,200,000

Step-by-step explanation:

3,153,007 rounds up to 3,200,00 because the number in the ten thousandths place is above 5.

3 0
3 years ago
Write an expression so that when you divide ¼ by a number the quotient will be greater than 1/4.
SVETLANKA909090 [29]
Hello There!

An example of this would be:
\frac{6}{1/4}
6 = \frac{6}{1}
\frac{6}{1} *  \frac{4}{1}
= \frac{24}{1}
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8 0
3 years ago
The number of members on an organization increases by an average of 125 members annually. There were 3,875 members in 1971. Choo
Lena [83]

Answer:

B.

Mn = Mn-1 + 125 for n > 1 ; M1 = 3,875

Step-by-step explanation:

Since they tell us after 1970, the first data would be that of 1971 and also that if we started since 1970, we do not know the data of 1969, therefore answer B is correct.

Replacing:

Let M1 = 1971 then Mn-1, that is M0 = 1970, we know that the population of 1970 the population is 3750, because it would be 125 less than the subsequent year, and in 1975 there are 3875. Therefore:

in n = 1

 M1 = M0 + 125

3875 = 3750 + 125

this gives an equality, thus fulfilling the equation.

8 0
3 years ago
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