Hyperoptic is one of the new broadband providers, offering ultrafast Internet speeds of up to 1 Gbps. Fiberoptic cables had been installed in buildings and then connected to individual apartments, which is used in most office and home networks today. A report stated that only 20% of all the Internet users had access to Hyperoptic’s broadband services at home. By January 2016, through a telephone survey of 350 adults, it was found that 25% of the sample had access to Hyperoptic’s broadband connection at home. You want to know whether the proportion changed in early 2016 for the entire population.

a. State the null and alternative hypothesis for the situation provided.

b. Use a p-value approach at a significance level of 5%

for your analysis.