Recent questions in Statistics and Probability

High school statisticsAnswered question

Kobe Dixon 2023-04-01

Read carefully and choose only one option

A statistic is an unbiased estimator of a parameter when (a) the statistic is calculated from a random sample. (b) in a single sample, the value of the statistic is equal to the value of the parameter. (c) in many samples, the values of the statistic are very close to the value of the parameter. (d) in many samples, the values of the statistic are centered at the value of the parameter. (e) in many samples, the distribution of the statistic has a shape that is approximately Normal

High school statisticsAnswered question

Leon Bishop 2023-04-01

Construct all random samples consisting three observations from the given data. Arrange the observations in ascending order without replacement and repetition.

86 89 92 95 98.

86 89 92 95 98.

High school probabilityAnswered question

ystyrixkzd 2023-03-31

Write formula for the sequence of -4, 0, 8, 20, 36, 56, 80, where the order of f(x) is 0, 1, 2, 3, 4, 5, 6 respectively

High school statisticsAnswered question

juanikitoexgv5y 2023-03-31

Find the mean of the following data: 12,10,15,10,16,12,10,15,15,13.

High school probabilityAnswered question

ballar9bod 2023-03-31

Assume that when adults with smartphones are randomly selected, 54% use them in meetings or classes (based on data from an LG Smartphone survey). If 8 adult smartphone users are randomly selected, find the probability that exactly 6 of them use their smartphones in meetings or classes?

High school probabilityAnswered question

Aydan Hardy 2023-03-31

A binomial probability experiment is conducted with the given parameters. Compute the probability of x successes in the n independent trials of the experiment.n=20,

p=0.7,

x=19

P(19)=

p=0.7,

x=19

P(19)=

High school probabilityAnswered question

Kelton Rogers 2023-03-30

In binomial probability distribution, the dependents of standard deviations must includes.

a) all of above.

b) probability of q.

c) probability of p.

d) trials.

a) all of above.

b) probability of q.

c) probability of p.

d) trials.

High school probabilityAnswered question

Jordan Graves 2023-03-30

The probability that a man will be alive in 25 years is 3/5, and the probability that his wifewill be alive in 25 years is 2/3

Determine the probability that both will be alive

Determine the probability that both will be alive

High school probabilityAnswered question

se2ng0uhp 2023-03-29

How many different ways can you make change for a quarter??

(Different arrangements of the same coins are not counted separately.)

(Different arrangements of the same coins are not counted separately.)

High school probabilityAnswered question

Maui1opj 2023-03-23

One hundred people line up to board an airplane that can accommodate 100 passengers. Each has a boarding pass with assigned seat. However, the first passenger to board has misplaced his boarding pass and is assigned a seat at random. After that, each person takes the assigned seat. What is the probability that the last person to board gets his assigned seat unoccupied?

A) 1

B) 0.33

C) 0.6

D) 0.5

A) 1

B) 0.33

C) 0.6

D) 0.5

High school statisticsAnswered question

hangobw6h 2023-03-23

The equation has a positive slope and a negativey-intercept.

1) y=−2x−3

2) y=2−3x

3) y=2+3x

4) y=−2+3x

1) y=−2x−3

2) y=2−3x

3) y=2+3x

4) y=−2+3x

High school statisticsAnswered question

chatterbsau3e 2023-03-22

What term refers to the standard deviation of the sampling distribution?

High school statisticsAnswered question

Chelsea Mcknight 2023-03-21

Fill in the blanks to make the statement true: $30\%of\u20b9360=\_\_\_\_\_\_\_\_$.

Descriptive StatisticsAnswered question

Arturo Callahan 2023-03-21

What is the range of the function $y={x}^{2}$?

High school probabilityAnswered question

Israel Young 2023-03-19

The value of $(243{)}^{-\frac{2}{5}}$ is _______.

A)9

B)$\frac{1}{9}$

C)$\frac{1}{3}$

D)0

A)9

B)$\frac{1}{9}$

C)$\frac{1}{3}$

D)0

High school probabilityAnswered question

v1kibc2 2023-03-14

1 octopus has 8 legs. How many legs does 3 octopuses have?

A) 16

B 24

C) 32

D) 14

A) 16

B 24

C) 32

D) 14

High school probabilityAnswered question

Urijah Lawrence 2023-03-13

From a pack of 52 cards, two cards are drawn in succession one by one without replacement. The probability that both are aces is...

High school probabilityAnswered question

Eliza Berry 2023-03-13

A pack of cards contains $4$ aces, $4$ kings, $4$ queens and $4$ jacks. Two cards are drawn at random. The probability that at least one of these is an ace is A$\frac{9}{20}$ B$\frac{3}{16}$ C$\frac{1}{6}$ D$\frac{1}{9}$

Descriptive StatisticsAnswered question

Claudia Marshall 2023-03-11

The domain and range of $y=\mathrm{sin}x$ is

A)$R,[0,\mathrm{\infty}]$

B)$R,[-1,1]$

C)$R,[-\mathrm{\infty},\mathrm{\infty}]$

D)$R,[1,\mathrm{\infty}]$

A)$R,[0,\mathrm{\infty}]$

B)$R,[-1,1]$

C)$R,[-\mathrm{\infty},\mathrm{\infty}]$

D)$R,[1,\mathrm{\infty}]$

High school probabilityAnswered question

Immadvapsupvkd 2023-03-09

You spin a spinner that has 8 equal-sized sections numbered 1 to 8. Find the theoretical probability of landing on the given section(s) of the spinner. (i) section 1 (ii) odd-numbered section (iii) a section whose number is a power of 2. [4 MARKS]

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