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zzz [600]
3 years ago
10

A study was designed to compare the attitudes of two groups of nursing students towards computers. Group 1 had previously taken

a statistical methods course that involved significant computer interaction. Group 2 had taken a statistic methods course that did not use computers. The students' attitudes were measured by administering the Computer Anxiety Rating Scale (CARS). A random sample of 10 nursing students from Group 1 resulted in a mean score of 60.7 with a standard deviation of 6.9. A random sample of 15 nursing students from Group 2 resulted in a mean score of 66.3 with a standard deviation of 5.8. Can you conclude that the mean score for Group 1 is significantly lower than the mean score for Group 2? Let μ1 represent the mean score for Group 1 and μ2 represent the mean score for Group 2. Use a significance level of α=0.1 for the test. Assume that the population variances are equal and that the two populations are normally distributed. Step 1 of 4 : State the null and alternative hypotheses for the test.
Mathematics
1 answer:
NeX [460]3 years ago
3 0

Answer:

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Please help with this !
WINSTONCH [101]
17+15+b = 180 so If you do 180-(15+17) =b
Well we know 15+17 is 32 so now you do 180-32 which equals 148 so b=148
4 0
2 years ago
What is the simplified form of 162
SashulF [63]

Answer:

9 √ 2

Step-by-step explanation:

1. Rewrite  162 as 9^{2}    ⋅2  

2.  factor 81 out of 162

          \sqrt{81 (2)}

3.  Rewrite 81 as 9^{2}

          \sqrt{9^{2}.2 }

4. Pull the terms from under the radical

          \sqrt[9]{2}

I hope this helps :)

5 0
2 years ago
Solve for x help thx
valentinak56 [21]
X = 8
because 8 x 2 = 16
16 - 9 = 5
5 x 3 = 15
5 0
3 years ago
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mars1129 [50]

Answer:

Less than one

Step-by-step explanation:

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3 years ago
How do I solve equations with a variable to the power of something (give steps please)
lozanna [386]

Answer:

Step-by-step explanation:

Factoring will reveal the solution. So we divide the equation by the greatest common factor of the terms and use that factor as the coefficient. In this case the greatest common factor is just x.

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5 0
2 years ago
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