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evablogger [386]
3 years ago
15

A cognitive psychologist wants to investigate whether memory for a shopping list is affected by the strategy used to study the l

ist. She selects 20 random students and assigns each of them randomly to one of four different groups. Each group is given a different strategy by which to study the list. After the students study the list, they try to recall as many items as they can. The number of items remembered from the list for each students is given below.
Is there sufficient evidence to conclude that different strategies lead to different memory performance? Use significance level 0.05

Mathematics
1 answer:
Orlov [11]3 years ago
7 0

Answer:

There is no sufficient evidence

Step-by-step explanation:

See attached files

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If 47400 dollars is invested at an interest rate of 7 percent per year, find the value of the investment at the end of 5 years f
Anni [7]

Answer:

Part A) Annual \$66,480.95  

Part B) Semiannual \$66,862.38  

Part C) Monthly \$67,195.44  

Part D) Daily \$67,261.54  

Step-by-step explanation:

we know that

The compound interest formula is equal to  

A=P(1+\frac{r}{n})^{nt}  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

so

Part A) Annual

in this problem we have  

t=5\ years\\ P=\$47,400\\ r=0.07\\n=1  

substitute in the formula above  

A=\$47,400(1+\frac{0.07}{1})^{1*5}  

A=\$47,400(1.07)^{5}  

A=\$66,480.95  

Part B) Semiannual

in this problem we have  

t=5\ years\\ P=\$47,400\\ r=0.07\\n=2  

substitute in the formula above  

A=\$47,400(1+\frac{0.07}{2})^{2*5}  

A=\$47,400(1.035)^{10}  

A=\$66,862.38  

Part C) Monthly

in this problem we have  

t=5\ years\\ P=\$47,400\\ r=0.07\\n=12  

substitute in the formula above  

A=\$47,400(1+\frac{0.07}{12})^{12*5}  

A=\$47,400(1.0058)^{60}  

A=\$67,195.44  

Part D) Daily

in this problem we have  

t=5\ years\\ P=\$47,400\\ r=0.07\\n=365  

substitute in the formula above  

A=\$47,400(1+\frac{0.07}{365})^{365*5}  

A=\$47,400(1.0002)^{1,825}  

A=\$67,261.54  

8 0
3 years ago
Compare the values of 2s and 5s in 55,220
Readme [11.4K]
Hello ! 
20= Twenty
200= two hundread 
5,000= five thousand 
50,000= fifty thousand 
we always replace the numbers that comes after the value with 0's 
Good luck

4 0
3 years ago
Zack needs to divide these base-ten blocks into 3 equal groups.
Vinil7 [7]
Can you show a picture so we can see? It asks for a model.
5 0
3 years ago
12ft 6ft 6ft 6ft what is the area of this face
Ainat [17]

Answer:

2,592ft

Step-by-step explanation:

The answer is 2,592ft because I multiplied 12ftX6ftX 6ftX6ft=2,952ft .

7 0
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The question i have it number 3
viktelen [127]

Answer:

wont load but pick 3

Step-by-step explanation:

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