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Ten years ago the residents in a car congested area were asked whether they were in
favour o...
Mathematics, 26.03.2021 01:00 ashleymarina
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Ten years ago the residents in a car congested area were asked whether they were in
favour of a residents' parking scheme. The proportion of residents who supported the
parking permit scheme was 30%. The scheme was never implemented due to lack of
funding
The funding is now available and a new councillor believes that the support for the
scheme is different now.
The replies to questionnaires of twenty current residents are considered.
a) Determine the critical region to test, at the 5% level of significance, the
councillor's belief.
b) State the actual significance level for a test using the critical region of part (a).
Ten residents in support of the scheme were found in the sample.
c) Complete the test.
Answers: 1
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At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 16 cubic feet per minute. the diameter of the base of the cone is approximately three times the altitude. at what rate is the height of the pile changing when the pile is 12 feet high? (hint: the formula for the volume of a cone is v = 1 3 πr2h.)
Answers: 3
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Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?
Answers: 3
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Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?
Answers: 1
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