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il63 [147K]
3 years ago
14

The function d(x) = 1375 − 110x represents the distance (in miles) a high-speed

Mathematics
1 answer:
earnstyle [38]3 years ago
5 0
D(x) = 1375 - 110x.....where x is the hrs traveled and d(x) is the distance in miles left to travel

(a) after 8 hrs....so x = 8
     d(8) = 1375 - 110(8)
     d(8) = 1375 - 880
     d(8) = 495...so after 8 hrs, u r 495 miles short of ur destination

(b) before reaching its destination...its destination is 1375 miles....and if u r traveling 110 miles per hr....1375/110 = 12.5....so after 12.5 hrs, u should reach ur destination.
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Researchers studying the acquisition of pronunciation often compare measurements made on the recorded speech of adults and child
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Answer:

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Step-by-step explanation:

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sa standard deviatiation of VOT for adults = 24.74

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This indicates that the additional information that is required for the conditions of the test to be satisfied is 'distribution of the population'. the addition assumption to be made is, that the population distribution is normal.

(b) Calculating the test statistics using the formula;

t = (xa -xc)/SE - d

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But SE = √sa²/na +sc²/nc

           = √24.74 ²/20 + 39.89²/10

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           = 13.774

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(c) Calculating the p-value, we have;

Degree of freedom = na + nc -2

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(D1) From the information in part (C) the null hypothesis is not rejected.

Since the null hypothesis is not rejected, there might be a chance that not rejecting null hypothesis would be wrong. In this type of situation the error that can occur would be type II error.

(D2) The type of error describe in the context of this study is obtained by the concept of the type II error which tells that the null hypothesis is not rejected when it is actually false.

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