Formulate the null and alternative hypotheses in words and in symbols. 1. The average IQ of the adult population is 100. The researcher believes that the average IQ is lower. H: Words: Symbols: H: Words: Symbols: 2. A company stated that the straw machine make straws that are 4mm diameter. A worker believes that machine no longer makes a straw of this. H: Words: Symbols: H: Words: Symbols: 3. Doctor believes that the average teen sleeps on average no longer than 10 hours per day. A researcher believes that teen on average sleep longer. H: Words: Symbols: H: Words: Symbols: 4. The school board claims that at least 60% of the students bring a phone to school. A teacher believes that this number is too high. H: Words: Symbols: H: Words: Symbols: 5. It believed that candy machine makes chocolate bars that are on average of 5 g. A worker claims that the machine after maintenance no longer makes 5 bars. H: Words: Symbols: H: Words: Symbols: