4. a. A friend of yours wanted to test the adaptability of working online before and after COVID in his organization. He collected some data before COVID and now wants to test it with the data he obtained after COVID. He performed ANOVA for doing so. You suggested him that he could have performed it without using ANOVA. How? Whether the results from your suggested technique match his results? b. You collected a sample of size 5 from a population which you realized has very high standard deviation. You think that your interval will be very wide, what you can do to narrow it down without changing your confidence level. Will your suggestion to improve the width of the interval increase the probability of the true mean lying in that interval?

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4.
a. A friend of yours wanted to test the adaptability of working
online before and after COVID in his organization. He collected
some data before COVID and now wants to test it with the data
he obtained after COVID. He performed ANOVA for doing so.
You suggested him that he could have performed it without
using ANOVA. How? Whether the results from your suggested
technique match his results?
b. You collected a sample of size 5 from a population which you
realized has very high standard deviation. You think that your
interval will be very wide, what you can do to narrow it down
without changing your confidence level. Will your suggestion to
improve the width of the interval increase the probability of the
true mean lying in that interval?
Transcribed Image Text:4. a. A friend of yours wanted to test the adaptability of working online before and after COVID in his organization. He collected some data before COVID and now wants to test it with the data he obtained after COVID. He performed ANOVA for doing so. You suggested him that he could have performed it without using ANOVA. How? Whether the results from your suggested technique match his results? b. You collected a sample of size 5 from a population which you realized has very high standard deviation. You think that your interval will be very wide, what you can do to narrow it down without changing your confidence level. Will your suggestion to improve the width of the interval increase the probability of the true mean lying in that interval?
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