All categories

2 years ago

If there are 300 houseflies in the study, how many of them will live longer than 21 days?

Mathematics

1 answer:

Levart [38]2 years ago

8 0

The 48 flies of them will live longer than 21 days if there are 300 houseflies in the study.

<h3>What is a normal distribution?</h3>

It's the probability curve of a continuous distribution that's most likely symmetric around the mean. On the Z curve, at Z=0, the chance is 50-50. A bell-shaped curve is another name for it.

We have mean u = 18 days

SD = 3 days

X = 21 days

From the formula:

Z = (X - u)/SD

Z = (21 - 18)/3 = 1

P(x<21) = 0.84134

P(x>21) = 1 - P(x<21) = 0.15866

Number of flies = 300×0.15866 = 47.59 ≈ 48 flies

Thus, the 48 flies of them will live longer than 21 days if there are 300 houseflies in the study.

Learn more about the normal distribution here:

brainly.com/question/12421652

#SPJ1

You might be interested in

40 - 2x [(8 x 3 + 6) +<br>12 -2 pls answer correctly

Degger [83]

Answer:

40 is the answer . is it right or Not?

3 0

3 years ago

Read 2 more answers

Function (True/False)

Tomtit [17]

Answer:

yes it is a function

Step-by-step explanation:

Mathematics

In mathematics, a function is a binary relation over two sets that associates to every element of the first set exactly one element of the second set. Typical examples are functions from integers to integers or from the real numbers to real numbers.

5 0

3 years ago

Read 2 more answers

IR = V (solve for R) *

VashaNatasha [74]

Answer:

R = $\frac{V}{I}$

Step-by-step explanation:

IR = V ( isolate R by dividing both sides by I )

R = $\frac{V}{I}$

6 0

2 years ago

Someone, please help! I'm really confused

11111nata11111 [884]

The correct pair is option E, which is:

FH ≅ FH - reflexive property

ΔGFH ≅ ΔEFH - SAS theorem

<h3>What is the SAS Congruence Theorem?</h3>

The SAS theorems states that two triangles are congruent if they have two pairs of congruent sides and a pair of congruent included angles.

<h3>What is the Reflexive Property?</h3>

The reflexive property of geometry states that an angle or line will always be congruent to itself.

In the two column-proof, since FH = FH using the reflexive property, then both triangles are congruent to each other by the SAS congruence theorem.

The missing pair of reasons that completes the proof are:

FH ≅ FH - reflexive property

ΔGFH ≅ ΔEFH - SAS theorem

Learn more about the SAS theorem on:

brainly.com/question/2102943

#SPJ1