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3 years ago

1. The data set represents the number of errors on a typing test. 5 6 8 8 9 9 10 10 10 12

Mathematics

1 answer:

makvit [3.9K]3 years ago

4 0

Answer i need the points

Step-by-step explanation:

You might be interested in

In a sample of 408 new websites registered on the Internet, 37 were anonymous (i.e., they shielded their name and contact inform

xeze [42]

Answer: $(0.0628,\ 0.1186)$

Step-by-step explanation:

Given : Significance level : $\alpha:1-0.95=0.05$

Critical value : $z_{\alpha/2}=\pm1.96$

Sample size : n= 408

Proportion of new websites registered on the Internet were anonymous :

$\hat{p}=\dfrac{37}{408}\approx0.0907$

The formula to find the confidence interval for population proportion is given by :-

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

i.e. $0.0907\pm (1.96)\sqrt{\dfrac{0.0907(1-0.0907)}{408}}$

$=0.0907\pm0.0278665515649\\\\\approx 0.0907\pm0.0279\\\\=(0.0907-0.0279,\ 0.0907+0.0279)\\\\=(0.0628,\ 0.1186)$

Hence, the 95 percent confidence interval for the proportion of all new websites that were anonymous = $(0.0628,\ 0.1186)$

8 0

3 years ago

Please solve this question

ANTONII [103]

The probability that a randomly selected x-value from the distribution will be in the interval:

P(35 < x < 45) = 0.6827 and,
P(30 < x < 40) = 0.47725

<h3>What is the probability of a normal distribution?</h3>

The probability of a normal distribution can be determined from the symmetrical curve between 1 to 100%.

From the information given:

Mean = 40
Standard deviation = 5

To determine the probability that a randomly selected x-value is in the given interval:

P(35<x<45)
P(30<x<40)

$P(35 < x < 45) = P(\dfrac{35-40}{5} < Z < \dfrac{45-40}{5})$

$P(35 < x < 45) = P(\dfrac{-5}{5} < Z < \dfrac{5}{5})$

$P(35 < x < 45) = P(-1 < Z < 1)$

$\mathbf{P(35 < x < 45) = P[Z\le 1] -P[Z\le -1]}$

Using normal distribution table:

P(35 < x < 45) = 0.8414 - 0.1587

P(35 < x < 45) = 0.6827

$P(30 < x < 40) = P(\dfrac{30-40}{5} < Z < \dfrac{40-40}{5})$

$P(30 < x < 40) = P(\dfrac{-10}{5} < Z < \dfrac{0}{5})$

$P(30 < x < 40) = P(-2 < Z < 0)$

$\mathbf{P(30 < x < 40) = P[Z\le0]-P[Z\le -2]}$

Using normal distribution table:

P(30 < x < 40) = 0.5 - 0.02275

P(30 < x < 40) = 0.47725

Learn more about the probability of a normal distribution here:

brainly.com/question/4079902

#SPJ1

3 0

2 years ago

HELP ME ASAP PLEASE!!

fomenos

Answer:

x>1

Step-by-step explanation:

Make a line put number like

__________|____________________

-4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10

4 0

3 years ago

What simplified ratio correctly compares 24 months to 3 years? Drag and drop the appropriate numbers into the boxes.

Leya [2.2K]

8 to 1 i think not saying its the answer though i think it is

7 0

4 years ago

Read 2 more answers

HELP Referring to the figure, which statement best describes the

Dafna1 [17]

Answer:

hold for a second ill get you an answer

Step-by-step explanation:

8 0

3 years ago

1. The data set represents the number of errors on a typing test. 5 6 8 8 9 9 10 10 10 12​

1. The data set represents the number of errors on a typing test. 5 6 8 8 9 9 10 10 10 12