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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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3.

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a closed dot stands for greater than/less than or equal to and the graph says that r is greater than 2.5

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Step-by-step explanation:

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Read 2 more answers
What is the least common multiple of the first 4 positive integers
Monica [59]

Answer:

The least common multiple of the 1st 4 positive integers is 12

Step-by-step explanation:

- Lets explain the meaning of the least common multiple

* The multiples of a number are the numbers formed by multiplying the

  number by another integers

- Ex: 2 , 4 , 6  are multiples of 2 because 2×1 = 2 , 2×2=4 ,

  2×3 = 6

* Least common multiple (L.C.M) of a set of numbers is the

  smallest number divisible by all of the numbers in the set

* To find the L.C.M of a set of numbers we look for the multiples of the

   greatest number and check them with the other numbers if they are

   divisible by the other numbers in the set, and choose the 1st one that

   divisible by all the numbers in the set

- Ex: 24 is the L.C.M of 6 , 8 , 12  because

→ The multiples of 12 are 12 , 24 , 36 , ........ and 12 is the 1st number

   divisible by the 3 numbers

- Lets solve the problem

* The first four positive integers are 1 , 2 , 3 , 4

→ The greatest one is 4

→ The multiples of 4 are ⇒ 4 , 8 , 12 , 16 , ........

→ 4 not divisible by 3 then it is not a common multiple of them

→ 8 not divisible by 3 hen it is not a common multiple of them

→ 12 is a common multiple of 1 , 2 , 3 , 4 because it is divisible by all of

   them

<em>The least common multiple of the 1st 4 positive integers is 12</em>

5 0
3 years ago
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