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3 years ago

4. What is the simplest way to permanently get rid of an unwanted file?

1 answer:

6 0

It depends, if it's chromebook, go to files and click the file or folder you want to delete. Click Delete to Delete. You can also use the shortcut Alt + Backspace. For Apple, Drag the item/file to the Trash. Or click on the item, then press Command-Delete. Click the Trash, then click Empty. When you see a warning message, click OK.

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Fifty-three percent of U.S households have a personal computer. In a random sample of 250 households, what is the probability th

aleksley [76]

Answer:

The correct Answer is 0.0571

Explanation:

53% of U.S. households have a PCs.

So, P(Having personal computer) = p = 0.53

Sample size(n) = 250

np(1-p) = 250 * 0.53 * (1 - 0.53) = 62.275 > 10

So, we can just estimate binomial distribution to normal distribution

Mean of proportion(p) = 0.53

Standard error of proportion(SE) = $\sqrt{\frac{p(1-p)}{n} }$ = $\sqrt{\frac{0.53(1-0.53)}{250} }$ = 0.0316

For x = 120, sample proportion(p) = $\frac{x}{n}$ = $\frac{120}{250}$ = 0.48

So, likelihood that fewer than 120 have a PC

= P(x < 120)

= P( p^ < 0.48 )

= P(z < $\frac{0.48-0.53}{0.0316}$ ) (z= $\frac{p^-p}{SE}$ )

= P(z < -1.58)

= 0.0571 ( From normal table )

6 0

3 years ago

What determines WiFi speeds, please list all your answers and explain how it affects the WiFi speed.

soldi70 [24.7K]

It’s hz and bandwidth, 5ghz is better then a 2.5ghz but the wavelength is more condensed so it won’t travel so far so the 5ghz will be faster but the 2.5ghz will go further.

8 0

3 years ago

Date Time Manipulation Exploration If you start from Jan 1st, 1757, and repeatedly add 8 days, until you hit 1800, how many time

zimovet [89]

Answer:

from datetime import datetime, date, timedelta

def count_weekdays(start_date, add_days, stop_year, weekday):

my_date = start_date

m = 0

while my_date.year != stop_year:

my_date = my_date + timedelta(days = add_days)

if my_date.isoweekday() == weekday:

m += 1

return m

date_val = date(1757,1,1)

try:

date_val = datetime.fromisoformat(input("Enter date in the format yyyy-mm-dd: "))

except ValueError:

print("Wrong isoformat string")

print(count_weekdays(date_val, 8, 1800, 1))

Explanation:

The datetime package of the python programming language has several time modules like the date, datetime, pytz, timedelta, etc, used to manipulate date and time in documents. The function count_weekdays has four parameters and returns the number of a specified weekday in a period of time.

4 0

3 years ago

The service known as ___ contains original content in the form of live or recorded streams showing individuals playing video gam

liraira [26]

<u>Twitch</u> is an online service that comprises original content in the form of live or recorded streams and it is typically focused on showing various individuals that are playing video games.

Twitch is an online (web) service that was launched in June 2011 and it derived its name from twitch gaming such as video games that are mainly about fast action and the use of reflexes by the game players.

The main purpose of Twitch is to avail game players the opportunity to stream or show live or recorded videos of themselves playing video games.

6 0

2 years ago

Which of the following statements are true of Ohm's Law?

Shalnov [3]

Answer:

Can you post a pic or copy and paste the question awnsers?

Explanation:

7 0

3 years ago

Read 2 more answers