Question

UU.21.3
Raju Restaurant near the railway station at Falna has been having average sales of 500 tea
cups per day. Because of the development of bus stand nearby, it expects to increase its
sales. During the first 12 days after the start of the bus stand, the daily sales were as under:
550, 570, 490, 615, 505, 580, 570, 460, 600, 580, 530, 526. To give the conclusion that Raju
Restaurant's sales have either increased or not, which type of hypothesis testing will have
to apply? Use 5 per cent level of significance.
(At 5 per cent level of significance, z = 13645 & t = 1.796 with 11 d.f.)
a) t, and its observed value is 3.558
b) t, and its observed value is -3.558
c) z, and its observed value is 3.548
d) None of these​

Answer 1

Answer:

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Explanation:

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