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3 years ago

If you flip a coin 200 times, approximately how many times will it land heads up?

Mathematics

2 answers:

Nady [450]3 years ago

8 0

Answer:

it would be very likely that it would land heads up, about 100 times.

Step-by-step explanation:

Ivahew [28]3 years ago

6 0

Answer:

Approximately 100 times.

Step-by-step explanation:

There is a 50% chance of a coin landing heads or tails if you flip only one.

That means that if you flip two coins, one of them will land heads up.

If you flip 200 coins, about 100 of them will land heads up.

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A researcher wants to determine whether the number of minutes adults spend online per day is related to gender. A random sample

suter [353]

Answer:

The expected frequency for the cell E2,2 is = 33

Step-by-step explanation:

The given data is

Gender | 0-30| 30-60| 60-90| 90+ Totals

Male | 23 | 35 | 76 | 46 180

Female | 31 | 42 | 46 | 16 135

Totals 54 77 122 62 315

The expected frequency for the cell E2,2 is :

Expected for the (30-60 box for females) = Total of (30-6)/ (total )* females

= ( 77/315)135= 33

Here p= 77/315 and n= 135

therefor X= pn = 33

χ²= (33-42)²/33= 2.455 ( for the single value of E2,2=33)

Expected for the (30-60 box for males) = Total of (30-6)/ (total )* males

= ( 77/315)180= 44

χ²= (44-42)²/44= 0.09

The critical region is χ² (0.05) 3 ≥ χ²= 11.34

Let the null and alternate hypothesis be

H0:the number of minutes spent online per day is not related to gender

against

Ha: the number of minutes spent online per day is related to gender

The single value of χ² for E2,2 = 2.45 is less than the critical value of 11.34.

6 0

2 years ago

1/2 (16x + 20) Need help

KATRIN_1 [288]

Answer: let's say x = 1

16 x 1 =16

16+20=36

36x1/2=18

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

What would you round 2.706

butalik [34]

It is going to be 4563

6 0

3 years ago

Read 2 more answers

Problem page three consecutive even integers have a sum of 36 . find the integers.

ANTONII [103]

3 consecutive even integers = 36 .
ANSWER 10+12+14= 36

6 0

3 years ago

The longest human power sporting event is the tour de France cycling race in a particular year the average speed for the winner

sergey [27]

Answer:

The winner completed the race in 96 hours and 52 minutes.

Step-by-step explanation:

Given:

Distance of the cycling race = 2292 miles

Average speed of the winner = $23.66\ mph$

We need to find time required by winner to complete the race.

Solution:

Now we know that;

Time required can be calculated by dividing Total Distance from the Average speed.

framing in equation form we get;

time required by winner to complete the race = $\frac{2292}{23.66} = 96.87\ hrs$

Now converting $0.87\ hrs$ into minutes we get;

$0.87\times 60= 52.2\approx 52\ mins$

Hence the winner completed the race in 96 hours and 52 minutes.

3 0

3 years ago