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gayaneshka [121]
3 years ago
14

Consider the means of the samples shown in the table. Which value is least likely to be the mean of the population from which th

e samples were taken?
sample//sample mean

1------------15.2

2 ------------17.1

3 -----------16.9

4 ------------12.2
5-------------18.0

6 ------------16.3

7 -------------17.4


A.12.2

B.15.3

C.16.4

D.17.5
Mathematics
2 answers:
soldier1979 [14.2K]3 years ago
8 0
If we ignore   <span>4 ------------12.2, we have a list of 6 means ranging from 16.9 to 18.0.  It's reasonable to state that "12.2 is significantly lower than each of the other means."  Thus, 12.2 is least likely to be the mean of the population from which the samples were taken.
 </span>
defon3 years ago
3 0

Answer:

12.2

Step-by-step explanation:

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A government official is in charge of allocating social programs throughout the city of Vancouver. He will decide where these so
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Answer: (0.132132, 0.274368)

Step-by-step explanation:

Given : A simple random sample of 123 people living in Gastown and finds that 25 have an annual income that is below the poverty line.

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\hat{p}=\dfrac{25}{123}\approx0.203252

Critical value for 95% confidence interval : z_{\alpha/2}=1.96

Confidence interval for population :

\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

i.e. 0.203252\pm (1.96)\sqrt{\dfrac{0.203252(1-0.203252)}{123}}

0.203252\pm (1.96)\sqrt{\dfrac{0.203252(1-0.203252)}{123}}\\\\\0.203252\pm0.071118\\\\=(0.20325-0.071118,\ 0.203252+0.071118)\\\\=(0.132132,\ 0.274368)

Hence, the 95% confidence interval for the true proportion of Gastown residents living below the poverty line : (0.132132, 0.274368)

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almond37 [142]

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When all sides are equal

Step-by-step explanation:

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4%is the answer you are looking for

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Trava [24]

9514 1404 393

Answer:

  16.4

Step-by-step explanation:

The law of cosines is useful here. It tells you ...

  b^2 = a^2 + c^2 -2ac·cos(B)

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4 0
3 years ago
A chain of retail computer stores opened 2 stores in its first year of operation. After 8 years of operation, the chain consiste
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Answer:

0.66

Step-by-step explanation:

The exponential growth equation is expressed as;

S(t) = S0e^kt

S(t) is the number of stores after t years

S0 is the initial number of stores

If a chain of retail computer stores opened 2 stores in its first year of operation then at t = 1, S(t) = 2. Substitute into the equation;

2 = S0e^k(1)

2 = S0e^k .... 1

Also if after 8 years of operation, the chain consisted of 206 stores, this means at t = 8, S(t) = 206. Substitute into the equation;

206 = S0e^k(1)

206 = S0e^8k .... 2

Next is to calculate the value of k

Divide equation 2 by 1;

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Hence the value of k to the nearest hundredth is 0.66

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