80 bulbs are selected at random from a lot and their lifetime in hours is recorded as under- - Lifetime in hours 300 500 700 900 1100- Frequency 10 12 23 25 10- - Our bulb is selected at random from the lot- What is the probability that its life is 1150 hours- a 1-80 b 7-16 c 1 d 0

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard IX

Mathematics

Probability

80 bulbs are ...

Question

80 bulbs are selected at random from a lot and their lifetime in hours is recorded as under.

$\begin{matrix} Lifetime (in hours) & 300 & 500 & 700 & 900 & 1100 Frequency & 10 & 12 & 23 & 25 & 10 \end{matrix}$

Our bulb is selected at random from the lot. What is the probability that its life is 1150 hours?

(a) $\frac{1}{80}$

(b) $\frac{7}{16}$

(c) 1

(d) 0

Open in App

Solution

ANSWER:
(d) 0
Maximum lifetime a bulb has is 1100 hours. There is no bulb with lifetime 1150 hours.

Suggest Corrections

Similar questions

Q. 80 bulbs are selected at random from a lot and their lifetime is hours is recorded as under.

Lifetime (in hours)	300	500	700	900	1100
Frequency	10	12	23	25	10

One bulb is selected at random from the lot. What is the probability that its life is 1150?
(a)

\frac{1}{80}

(b)

\frac{7}{16}

Question 29
80 bulbs are selected at random from a lot and their life time ( in hours) is recorded in the form of a frequency table given below:

$\begin{matrix} Lifetime (in hours) & 300 & 500 & 700 & 900 & 1100 Frequency & 10 & 12 & 23 & 25 & 10 \end{matrix}$

One bulb is selected at random from the lot. The probability that its life is 1150 h, is:

A) $\frac{1}{80}$
B) $\frac{7}{16}$
C) 0
D) 1

Q. 80 bulbs are selected at random from a lot and their lifetime (in hours) is recorded in the form of a frequency table given below:

\begin{matrix} Lifetime (in hours) & 300 & 500 & 700 & 900 & 1100 Frequency & 10 & 12 & 23 & 25 & 10 \end{matrix}

One bulb is selected at random from the lot. The probability that its lifetime is 1150 hours is:

Q. Fill In The Blanks

80 bulbs are selected at random from a lot and their life time (in hrs) is recorded in the form of following frequency table:

Life time (in hrs): 300 500 700 900 1000
Frequency : 10 12 23 25 10

One bulb is selected at random from the lot. The probability that its life is 1150 hours is __________.

Q. One bulb is selected at random from the lot. The probability that its life is 1150 hours, is

Join BYJU'S Learning Program

80 bulbs are selected at random from a lot and their lifetime in hours is recorded as under. Lifetime (in hours)3005007009001100Frequency1012232510 Our bulb is selected at random from the lot. What is the probability that its life is 1150 hours? (a) 180 (b) 716 (c) 1 (d) 0

ANSWER: (d) 0 Maximum lifetime a bulb has is 1100 hours. There is no bulb with lifetime 1150 hours.

ANSWER:
(d) 0
Maximum lifetime a bulb has is 1100 hours. There is no bulb with lifetime 1150 hours.