A research center claims that % of adults in a certain country would travel into space on a commercial flight if they could afford it. In a random sample of adults in that country, % say that they would travel into space on a commercial flight if they could afford it. At , is there enough evidence to reject the research

Complete Question

A research center claims that 30% of adults in a certain country would travel into space on a commercial flight if they could afford it. In a random sample of 700 adults in that country, 34% say that they would travel into space on a commercial flight if they could afford it. At , is there enough evidence to reject the research center's claim

Yes there is  sufficient evidence to reject the research center's claim.

Step-by-step explanation:

From the question we are told that

     The population proportion is  p = 0.30

      The sample proportion is  

       The  sample size is  n = 700

The null hypothesis is  

 The  alternative hypothesis is  

Here we are going to be making use of  level of significance  =  0.05 to carry out this test

Now we will obtain the critical value of   from the normal distribution table , the value is  

 Generally the test statistics is mathematically represented as

substituting values

Looking at the values of t  and   we see that hence the null hypothesis is rejected

 Thus we can conclude that there is  sufficient evidence to reject the research center's claim.

the correct answer to your question is a. 4^4

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the answer is d. 75%