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ikadub [295]
3 years ago
8

What equation represents a line that passes through (2,-1/2) and has a slope of 3?

Mathematics
1 answer:
Lunna [17]3 years ago
7 0

Answer:

C. y+1/2=3(x-2)

Hope this helps

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The mean of a set of 5 positive numbers is 29. The median is 28. The mode is 33. What are 5 possible numbers.
finlep [7]

Answer:

28,29,30,33,33

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A study was designed to compare the attitudes of two groups of nursing students towards computers. Group 1 had previously taken
Leviafan [203]

Answer:

a. H0:μ1≥μ2

Ha:μ1<μ2

b. t=-3.076

c. Rejection region=[tcalculated<−1.717]

Reject H0

Step-by-step explanation:

a)

As the score for group 1 is lower than group 2,

Null hypothesis: H0:μ1≥μ2

Alternative hypothesis: H1:μ1<μ2

b) t test statistic for equal variances

t=(xbar1-xbar2)-(μ1-μ2)/sqrt[{1/n1+1/n2}*{((n1-1)s1²+(n2-1)s2²)/n1+n2-2}

t=63.3-70.2/sqrt[{1/11+1/13}*{((11-1)3.7²+(13-1)6.6²)/11+13-2}

t=-6.9/sqrt[{0.091+0.077}{136.9+522.72/22}]

t=-3.076

c. α=0.05, df=22

t(0.05,22)=-1.717

The rejection region is t calculated<t critical value

t<-1.717

We can see that the calculated value of t-statistic falls in rejection region and so we reject the null hypothesis at 5% significance level.

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3 years ago
What is 69% of 420?<br><br> jduheqicgewohia
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Answer:

289.8

Step-by-step explanation:

69%*420=289.8

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