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### Question Description

## Final Answer

Let Ho be the null hypothesis | ||

and H1 be the alternate hypothesis | ||

Let Ho=70% | ||

Thus, H1≠70% | ||

σ = sqrt[ P * ( 1 - P ) / n ] | ||

Sigma | 0.01271 | |

z = (p - P) / σ | ||

Z-value | -1.57359 | =(0.68-0.7)/0.01271 |

P-value | 0.115582 | |

Since the P-value (0.1155) is greater than the significance level (0.02), we cannot reject the null hypothesis. |

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