Math, asked by naveenaekula09, 2 months ago

4.) The mean life of a sample of 10 electric bulbs was found to be 1456 hou
cond sample of 77 bulbs chosen from a different batch showed a mean lite
398 hours. Is there a significant difference between the mean of two batches
b) in a city A. 20% of a random samnl

Answers

Answered by itmissloverni

3

Answer:

a bulb is a electric Torch That give us light in night

Previous Question

Next Question

Similar questions

Geography, 1 month ago

asterioids are found between the orbits of ...

Hindi, 1 month ago

(३) चिड़ियाँ जाल से किस प्रकार मुक्त हुई ?

Math, 1 month ago

what is photography?

Math, 2 months ago

which number should be added to 11/18 to get 97/72 ?

English, 2 months ago

meaning of cunningly in english...

Physics, 9 months ago

Law of conversation of energy in a stretched spring...

Science, 9 months ago

A. Fill in the blanks. Hints-Aestivation, Body surface , Hollow , Migration , Streamlined , Proboscis . 1. The needle like mouthpart of a mosquito is called ___ . 2. Fish have ___ body which helps them to cut through the water . 3. Birds have ___ bones. 4. Long summer sleep is called ___ . 5. Movement of animals in large numbers from one place to another is called ___ . 6. Earthworms breathe...

Math, 9 months ago

cubic polynomial x³+3x²-x-2 find the value of alpha+beta+gamma,alpha beta+beta gamma+ gamma alpha=alpha beta gamma...