All categories

3 years ago

Please answer this correctly

Mathematics

2 answers:

vampirchik [111]3 years ago

8 0

Braden’s garden has a higher ratio of marigolds to tulips

Dima020 [189]3 years ago

6 0

Answer:

braden has the highest ratio

You might be interested in

Simplify each product and write each expression in standard form, show your work please

Sonja [21]

I think the answer is x2 + 3x -28 and the x2 is x to the POWER of 2

6 0

4 years ago

G(x)=(x^2+1)(3x-5) what is the value of g(4)?

MAVERICK [17]

g(x) = x^2 + 1(3x - 5)

Replace all x's with 4.

g(4) = 4^2 + 1(3 * 4 - 5)

g(4) = 16 + 1(12 - 5)

g(4) = 17(7)

g(4) = 119 (This is your answer.)

5 0

3 years ago

Tell whether the lines through the given points are parallel, perpendicular, or neither.

Nataly_w [17]

Step-by-step explanation:

The slope of a line connecting two points is:

m = (y₂ − y₁) / (x₂ − x₁)

The slope of line 1 is:

m = (4 − 0) / (7 − 1)

m = 2/3

The slope of line 2 is:

m = (6 − 0) / (3 − 7)

m = -3/2

Parallel lines have equal slopes.

Perpendicular lines have opposite inverse slopes.

2/3 and -3/2 are opposite inverses, so the lines are perpendicular.

5 0

3 years ago

Sarah rolls a fair dice 54 times. How many times would Sarah expect to roll a four?

Svetradugi [14.3K]

Answer:

Step-by-step explanation:

The dice will have 6 sides so divide 54 by 6

6 0

3 years ago

Read 2 more answers

The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the mean life of a la

Illusion [34]

Answer:

a) Since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly different from 7539

b) $t=\frac{7359-7539}{\frac{840}{\sqrt{49}}}=-1.5$

The degrees of freedom are given by:

$df=n-1=49-1=48$

The p value is given by:

$p_v =P(t_{(48)}$

c) $7359-2.01\frac{840}{\sqrt{49}}=7117.8$

$7359+2.01\frac{840}{\sqrt{49}}=7600.2$

d) For this case since the confidence interval contains the value of 7539 we don't have enough evidence to reject the null hypothesis at the significance level given of 5%. same conclusion using the hypothesis test and with the confidence interval

Step-by-step explanation:

Part a and b

Data given

$\bar X=7359$ represent the sample mean

$\sigma=840$ represent the population standard deviation

$n=49$ sample size

$\mu_o =7539$ represent the value to test

t would represent the statistic

$p_v$ represent the p value

Hypothesis to verify

We want to verify if the mean life is different from 7539 hours, the system of hypothesis would be:

Null hypothesis: $\mu \geq 7539$

Alternative hypothesis: $\mu < 7539$

The statistic for this case would be given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

Replacing the info given we got:

$t=\frac{7359-7539}{\frac{840}{\sqrt{49}}}=-1.5$

The degrees of freedom are given by:

$df=n-1=49-1=48$

The p value is given by:

$p_v =P(t_{(48)}$

Since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly different from 7539

Part c

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

We can find the critical value using the confidence level given of 95% and using the t distribution with 48 degrees of freedom we got $t_{\alpha/2}=\pm 2.01$

Now we have everything in order to replace into formula (1):

$7359-2.01\frac{840}{\sqrt{49}}=7117.8$

$7359+2.01\frac{840}{\sqrt{49}}=7600.2$

Part d

For this case since the confidence interval contains the value of 7539 we don't have enough evidence to reject the null hypothesis at the significance level given of 5%. same conclusion using the hypothesis test and with the confidence interval

3 0

3 years ago