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Artyom0805 [142]
3 years ago
13

A piece of string 25 1/2 inches long to be cut into 3/4 -inch pieces. How many pieces will be there

Mathematics
1 answer:
antiseptic1488 [7]3 years ago
6 0
Their will be 34 pieces (I think)
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The national mean sales price for a new one-family home is $181,900. A sample of 40 one-family homes in the south showed a sampl
SIZIF [17.4K]

Answer:

a

The  null hypothesis is  \mu  =  \$181,900

The alternative hypothesis is  \mu <  \$ 181.900

b

t = -2.92

c

p-value  =  0.0016948

d

There no sufficient evidence to support the conclusion that the population mean sales prices for new one-family homes in the South is less expensive than the national mean of $181,900

Step-by-step explanation:

From the question we are told that

   The  population mean is  \mu  =  \$ 181, 900

    The  sample size is  n =  40

    The  sample  mean is  \=  x  =  \$ 166,400

      The  sample  standard deviation is s= \$ 33, 500

The  null hypothesis is  \mu  =  \$181,900

The alternative hypothesis is  \mu <  \$ 181.900

 

Generally the test statistics is mathematically represented as

      t =  \frac{ \= x  -  \mu }{ \frac{s}{\sqrt{n} } }

=>    t =  \frac{  166400  - 181900 }{ \frac{33500}{\sqrt{40} } }

=>    t = -2.92

Generally the p-value is obtain from the z-table  the value is  

      p-value  =  P(Z < t ) = P(Z  <  -2.93) = 0.0016948

=>    p-value  =  0.0016948

From the calculation we see that  

     p-value  >  \alpha  hence we fail to reject the null hypothesis

Thus there no sufficient evidence to support the conclusion that the population mean sales prices for new one-family homes in the South is less expensive than the national mean of $181,900

3 0
3 years ago
Please answer this correctly
kiruha [24]
I think they are at 7:10 pm
6 0
3 years ago
Read 2 more answers
Which of the following is a simpler way to write cos/sin<br><br> tan<br> sec<br> csc<br> cot
Yuri [45]
This one is really simple
cot
8 0
3 years ago
Read 2 more answers
There are 2.54 centimeters in 1 inch. There are 100 centimeters in 1 meter.
sveta [45]

Answer:

<em>Answer: 512 inches</em>

Step-by-step explanation:

<u>Unit Conversion</u>

We need to recall two basic unit conversions for length:

1 inch = 2.54 cm

1 meter = 100 cm

We are given a length of 13 meters. Converting to centimeters:

13 * 100 = 1300 cm

Now convert to inches dividing by 2.54:

1300 / 2.54 \approx 512

Answer: 512 inches

3 0
2 years ago
A dune buggy rental company charges $35.50 plus 9¢ per mile
goblinko [34]

The number of miles he drove for a cost of $30.50 is 275 miles.

<h3 /><h3>How to find the number of miles using linear equation?</h3>

Using linear equation,

y = mx + b

where

  • m = slope
  • b  = y-intercept

Therefore,

9 cents = $0.09

y = 35.50 + 0.09x

where

x = number of miles drove

y = total cost

Therefore,

60.25 =  35.50 + 0.09x

60.25 - 35.50 = 0.09x

24.75 = 0.09x

x = 24.75 / 0.09

x = 275 miles

learn more on linear equation here: brainly.com/question/17869266

#SPJ1

5 0
2 years ago
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