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3 years ago

Consider the following frequency table representing the scores on a test.

Mathematics

1 answer:

larisa [96]3 years ago

5 0

Answer:

(a)56

(b)47

(c)3

(d)29

Step-by-step explanation:

From the given frequency

(a) Fifth class is 56-59.

The lower class boundary for the fifth class is 56.

(b) Second class is 44-47.

The upper-class boundary for the second class is 47.

(d) Number of scores between 39.5 and 55.5 is

=7 + 7+ 7 + 8 =29

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A satilitle makes 4 revolutions in one day. How many revolutions would it make in 6 1/2 days

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3 years ago

A television game show has 11 doors, of which the contestant must pick 3. Behind 3 of the doors are expensive cars, and behind

bezimeni [28]

For there to be 1 car, we consider two possible outcomes:

The first door opened has a car or the second door opened has a car.

P(1 car) = 2/6 x 4/5 + 4/6 x 2/5

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For there to be no car in either door

P(no car) = 4/6 x 3/5

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3 years ago

The sum of three consecutive integers is 267. What is the largest integer?

Stella [2.4K]

Answer:

let integers be x,2x, 3x respectively

x+2x+3x= 267

6x= 267

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2x= 44.5*2= 89

3x= 44.5*3= 133.5

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plz mark as brainliest

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3 years ago

The mean length of 5 childrens' index finger is 5.6cm.

rjkz [21]

The mean length (rounded to 2 DP) of these 8 people's index finger is 5.83

<h3>What is the mean length (rounded to 2 DP) of these 8 people's index finger?</h3>

The given parameters are:

<u>Children</u>

Mean = 5.6 cm

Frequency = 5

<u>Adult</u>

Mean = 6.2 cm

Frequency = 3

The mean length of these 8 people's index finger is calculated as:

$\bar x = \frac{\sum fx}{\sum f}$

So, we have

Mean = (5.6 * 5 + 6.2 * 3)/(5 + 3)

Evaluate

Mean = 5.83

Hence, the mean length (rounded to 2 DP) of these 8 people's index finger is 5.83