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inessss [21]
3 years ago
10

magazine is considering the launch of an online edition. The magazine plans to go ahead only if it is convinced that more than 2

5​% of current readers would subscribe. The magazine contacted a simple random sample of 400 current​ subscribers, and 126 of those surveyed expressed interest. What should the magazine​ do?
Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
6 0

Answer: The option c

Step-by-step explanation:

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Cory Randle is an MIS manager for an international consulting firm. Cory travels to different European countries where he implem
romanna [79]

Answer: Efficiency metrics

Step-by-step explanation:

From the question, we are informed that Cory Randle tracks the performance of his system by tracking the response time it takes to respond to Twitter posts mentioning the news station, and as the speed and accuracy of content that are posted on numerous websites and social media sites.

The type of metrics that Cory is using to measure his system is efficiency metrics. It should be noted that this is to determine how efficiently a company is using its resources whether the resources are being used well or they're inefficiently used and wasted. The metrics can also be used to determine how effective management is.

4 0
3 years ago
A circle has a radius of 17cm. Find the radian measure of the central angle θ that intercepts an arc of length 5cm.
mrs_skeptik [129]
Use Pie the method we all learned i really can’t remember but i think it’s 3.14
8 0
2 years ago
Read 2 more answers
The price of a pair of shoes is $45.90. The sales tax rate is 5%. How much sales tax do you need to pay?
Ne4ueva [31]
Multiply the price by the 5% by turning the percent into a decimal.
5% = 0.05
45.90 x 0.05 = $2.295
Which can be rounded to 2.30 if needed.
5 0
3 years ago
Read 2 more answers
The following data comparing wait times at two rides at Disney are listed below: Position Pirates Splash Mountain Sample Size 32
myrzilka [38]

Answer:

a) (14.68 -18.77) - 2.39 \sqrt{\frac{11.87^2}{32}+\frac{16.79^2}{30}} =-12.968

(14.68 -18.77) + 2.39 \sqrt{\frac{11.87^2}{32}+\frac{16.79^2}{30}} =4.788

b) t=\frac{14.68-18.77}{\sqrt{\frac{11.87^2}{32}+\frac{16.79^2}{30}}}}=-1.10  

Step-by-step explanation:

Data given and notation

\bar X_{A}=14.68 represent the mean for Pirates

\bar X_{B}=18.77 represent the mean for Splash Mountain

s_{A}=11.87 represent the sample standard deviation for the sample Pirates

s_{B}=16.79 represent the sample standard deviation for the sample Slpash Mountain

n_{A}=32 sample size selected for Pirates

n_{B}=30 sample size selected for Splash Mountain

\alpha=0.02 represent the significance level for the hypothesis test.

t would represent the statistic (variable of interest)

p_v represent the p value for the test (variable of interest)

Part a

The confidence interval would be given by:

(\bar X_A -\bar X_B) \pm t_{\alpha/2} \sqrt{\frac{s^2_{A}}{n_{A}}+\frac{s^2_{B}}{n_{B}}}

The degrees of freedom are given by:

df = n_A +n_B -2 = 32+30-2 = 60

Since we want 98% of confidence the significance level is \alpha =1-0.98 =0.02 and \alpha/2 =0.01, we can find in the t distribution with df =60 a critical value that accumulates 0.01 of the area on each tail and we got:

t_{\alpha/2}= 2.39

And replacing we got for the confidence interval:

(14.68 -18.77) - 2.39 \sqrt{\frac{11.87^2}{32}+\frac{16.79^2}{30}} =-12.968

(14.68 -18.77) + 2.39 \sqrt{\frac{11.87^2}{32}+\frac{16.79^2}{30}} =4.788

Part b

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the means are equal, the system of hypothesis would be:

Null hypothesis:\mu_{A} = \mu_{B}

Alternative hypothesis:\mu_{A} \neq \mu_{B}

the statistic is given by:

t=\frac{\bar X_{A}-\bar X_{B}}{\sqrt{\frac{s^2_{A}}{n_{A}}+\frac{s^2_{B}}{n_{B}}}} (1)

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine whether the means of two groups are equal to each other".

Calculate the statistic

We can replace in formula (1) the info given like this:

t=\frac{14.68-18.77}{\sqrt{\frac{11.87^2}{32}+\frac{16.79^2}{30}}}}=-1.10  

6 0
2 years ago
I have A and B, I need help with C.
WARRIOR [948]
The answer is $382.80. the perimeter is 600ft. if fence post are placed every five feet, you need 120 post because 600÷5 is 120. each post cost 3.19 so you need 382.80 because 3.19×120 is 382.8
8 0
3 years ago
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