3 years ago

PLEASE HELP! WILL MARK BRAINLIEST!

Mathematics

1 answer:

Irina-Kira [14]3 years ago

3 0

Answer:

Step-by-step explanation:

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If an experimenter conducts a t test for independent means and rejects the null hypothesis, the correct interpretation is that:

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Rejecting the null hypothesis means we've found a significant difference in the means. That means the probability that we'd see means so far apart by chance is less than our threshold of significance.

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Family traveled 25 miles in 1/2 hour. If it’s currently 3:00 pm and the destination is 225 miles away, what time will they arriv

dangina [55]

It is currently 03:00 PM, the family will reach at 03:00+4.5 = 07:30 PM

Step-by-step explanation:

We have to calculate the speed first to find the time it will take the family to complete the trip.

Given

Distance = d = 25 miles

Time = t = 1/2 hours = 0.5 hours

$Speed =\frac{d}{t}\\=\frac{25}{0.5}\\=50 miles\ per\ hour$

Now,

Distance remaining = 225 miles

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$s=\frac{d}{t}\\t=\frac{d}{s}\\t=\frac{225}{50}\\t=4.5\ hours$

As we see that the time required to complete the journey is 4.5 hours.

It is currently 03:00 PM, the family will reach at 03:00+4.5 = 07:30 PM

Keywords: Speed, Distance

Learn more about speed at:

#LearnwithBrainly

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3 years ago

Math.............................................

emmasim [6.3K]

1. B) 3/2 = 1.5
2. B) 3/7

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