I need the answer ASAP

Researchers are interested in the effect of a certain nutrient on the growth rate of plant seedlings. Using a hydroponics grow p

Sergeeva-Olga [200]

Answer:

1) $\bar X \pm ME$

And the margin of error for this case is $ME= 5.4$

And the confidence interval would be:

$61.5-5.4 = 56.1$

$61.5+5.4 = 66.9$

2) For this case the best estimator for the population mean $\mu$ is given by the sample mean:

$\bar X = 61.5$

And the reason of this is beacuse is an unbiased estimator of the parameter:

$E(\bar X) = \mu$

Step-by-step explanation:

Data given:

53.1, 60.2, 60.6, 62.1, 64.4, 68.6.

We can calculate the sample mean with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

$\bar X= 61.5$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size

Part 1

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

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

Or equivalently:

$\bar X \pm ME$

And the margin of error for this case is $ME= 5.4$

And the confidence interval would be:

$61.5-5.4 = 56.1$

$61.5+5.4 = 66.9$

Part 2

For this case the best estimator for the population mean $\mu$ is given by the sample mean:

$\bar X = 61.5$

And the reason of this is beacuse is an unbiased estimator of the parameter:

$E(\bar X) = \mu$

4 0

4 years ago

19 is less than 48 by what percentage?

vampirchik [111]

<span>19 is less than 48 by what percentage:
Let;s find out how many percent is the difference.
=> 48 - 19 = 29.
Next is to solve for the percentage
=> 29 / 48 = </span>0.60,
=> 0.60 * 100% = 60%
Thus, 19 is 60% lesser than 48.

4 0

3 years ago

HURRY I WILL MARK BRAINLIEST

Oksanka [162]

Answer:

The relationships between the quantities is x11

Step-by-step explanation:

If you do times 11 for each one you would get 11,22,33,44 but if you add ten to all of them you would get 11,12,13,14

3 0

3 years ago

If a = x+21, b = 4, c = x + 3, and d = 10, then the value of x =

Alex

Using the intersecting chord theorem:

a x b = c x d

x+21 * 4 = x+3 * 10

Simplify:

4x+84 = 10x+30

Subtract 30 from both sides:

4x + 54 = 10x

Subtract 4x from both sides:

54 = 6x

Divide both sides by 6:

x = 9

4 0

3 years ago

Read 2 more answers

If n is "the number," which equation could be used to solve for the number?

Alla [95]

Infinite solutions ig without one or more actual number or variable there is no way to get one solid answer. (Im not positive ik im probably very wrong but this is just my guess by looking at it Im barely passing math as is)

8 0

3 years ago