Unformatted text preview: % significance level.
)
2.
.
and (
so the normality criteria is satisfied.
̂ . . ̂ ̂ ( √ ) . . (
)
(lefttailed test)
.
since
, so we fail to reject
and do not find enough evidence to support . Therefore, there is insufficient evidence to say that less
than 40% of people eat pizza at least once per week at the 10% significance level..
)
3.
.
and (
so the normality criteria is satisfied.
̂ . ̂ . ̂ √ ( ) . . (
)
(twotailed test)
.
since
, so we
fail to reject
and do not find enough evidence to support . Therefore, there is insufficient evidence to say
that the proportion of people who prefer summer to winter is different than half....
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This document was uploaded on 04/03/2014.
 Spring '14

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