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noname [10]
2 years ago
11

Find value of x (4x-12) 120

Mathematics
2 answers:
Mamont248 [21]2 years ago
6 0

Answer:

33

Step-by-step explanation:

120+12=132

132÷4=33

Sorry if this didnt help.

Lady bird [3.3K]2 years ago
6 0

Answer:

x=33

Step-by-step explanation:

120 + 12 = 132 4x = 132

Divide each side by '4'

x = 33

Simplifying x = 33

hope this helps

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A random sample of 70 printers discovered that 25 of them were being used in small businesses. find the 95% limit for the popula
kvasek [131]

Answer:

The sample proportion of printers used in small business is:

\hat{p}=\frac{25}{70}=0.3571

The 95% confidence interval for the population proportion of printers that are used in small businesses is:

\hat{p} \pm z_{\frac{0.05}{2}} \sqrt{\frac{\hat{p}(1-\hat{p})}{n} }

Where:

z_{\frac{0.05}{2}}=1.96 is the critical value at 0.05 significance level

\therefore 0.3571 \pm 1.96 \sqrt{\frac{0.3571(1-0.3571)}{70} }

         0.3571 \pm 0.1122

         \left ( 0.3571 - 0.1122, 0.3571 + 0.1122 \right)

         \left(0.245,0.469 \right)

Therefore, the 95% confidence interval for the population proportion of printers that are used in small businesses is (0.245 , 0.469)



7 0
2 years ago
Need help with this. was removed when i posted it
Anna71 [15]
The first, third and fourth points are the answers
8 0
3 years ago
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