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3 years ago

Were does 9 -4 go on number line

2 answers:

5 0

The integer (9) will be located 9 units from 0 to the right of the number line. The integer (-4) will be located to the left of 0, 4 negative units. All negative numbers should be placed on the left of a number line, however all positive integers are located on the right of the number line.

rosijanka [135]3 years ago

3 0

Draw number line from -5 to 10. .number that line.

Then show a point in 9 and -4

I hope that's what you mean from question

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A manufacturer of running shoes knows that the average lifetime for a particular model of shoes is 15 months. Someone in the res

AveGali [126]

Answer:

The decision rule is

Fail to reject the null hypothesis

The conclusion is

There is no sufficient evidence to show that the designer's claim of a better shoe is supported by the trial results.

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 15 \ months$

The sample size is n = 25

The sample mean is $\= x = 17 \ months$

The standard deviation is $s = 5.5 \ months$

Let assume the level of significance of this test is $\alpha = 0.05$

The null hypothesis is $H_o : \mu = 15$

The alternative hypothesis is $H_a : \mu > 17$

Generally the degree of freedom is mathematically represented as

$df = n -1$

=> $df = 25 -1$

=> $df = 24$

Generally the test statistics is mathematically represented as

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

=> $t = \frac{ 17 - 15 }{\frac{5.5}{\sqrt{25} } }$

=> $t = 1.8182$

Generally from the student t distribution table the probability of obtaining $t = 1.8182$ to the right of the curve at a degree of freedom of $df = 24$ is

$p-value = P(t > 0.18182 ) = 0.4286$

From the value obtained we see that $p-value > \alpha$ hence

The decision rule is

Fail to reject the null hypothesis

The conclusion is

There is no sufficient evidence to show that the designer's claim of a better shoe is supported by the trial results.

7 0

3 years ago

Write the fact family for 5,8,and 40

Juli2301 [7.4K]

A fact family is basically just different equations with the same numbers getting the same/different numbers as answers you might say...
this will make more sense:
5x8=40
8x5=40
40/8=5
40/5=8

4 0

3 years ago

because an item is slightly dameged, a stock clerk reduced the price by $6. this represents 15% reduction.what was the original

Paul [167]

Answer:

$40

Step-by-step explanation:

6 = .15x

6 / .15 = 40

8 0

3 years ago

Help and i will give brainiest if you answer them all if random will report

Stels [109]

Answer:

first one is a and the second one is c

6 0

3 years ago

Read 2 more answers

If I had to choose a business to start off with I would start a lemonade stand With cookies

nadezda [96]

Answer:

When calculating startup costs, it's essential to consider both the market and the product you want to produce. In our infographic analysis, the startup cost of a lemonade stand in today's world would range from under $10 to almost $400 for a pre-fab stand ordered from the Internet and a fancy Breville juice extractor.

Step-by-step explanation:

4 0

3 years ago